Subcellular Location: HCN channel complex

Found 51 associated metabolites.

4 associated genes. HCN1, HCN2, HCN3, HCN4

Isoalantolactone

Naphtho(2,3-b)furan-2(3H)-one, decahydro-8a-methyl-3,5-bis(methylene)-, (3aR-(3a alpha,4a alpha,8a beta,9a alpha))-

C15H20O2 (232.1463)


Isoalantolactone is a sesquiterpene lactone of the eudesmanolide group. It has been isolated from Inula helenium. It has a role as an apoptosis inducer, an antifungal agent and a plant metabolite. It is a sesquiterpene lactone and a eudesmane sesquiterpenoid. Isoalantolactone is a natural product found in Eupatorium cannabinum, Critonia quadrangularis, and other organisms with data available. Isoalantolactone is found in herbs and spices. Isoalantolactone is a constituent of the essential oil of Inula helenium (elecampane) Constituent of the essential oil of Inula helenium (elecampane). Isoalantolactone is found in herbs and spices. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent.

   

Aconitine

(1S,2R,3R,4R,5R,6S,7S,8R,9R,13R,14R,16S,17S,18R)-8-(acetyloxy)-11-ethyl-5,7,14-trihydroxy-6,16,18-trimethoxy-13-(methoxymethyl)-11-azahexacyclo[7.7.2.1^{2,5}.0^{1,10}.0^{3,8}.0^{13,17}]nonadecan-4-yl benzoate

C34H47NO11 (645.3149)


D049990 - Membrane Transport Modulators > D062687 - Sodium Channel Agonists > D061585 - Voltage-Gated Sodium Channel Agonists D007155 - Immunologic Factors Aconitine is a diterpenoid that is 20-ethyl-3alpha,13,15alpha-trihydroxy-1alpha,6alpha,16beta-trimethoxy-4-(methoxymethyl)aconitane-8,14alpha-diol having acetate and benzoate groups at the 8- and 14-positions respectively. It is functionally related to an aconitane. Aconitine is a natural product found in Aconitum anthora, Aconitum napellus, and other organisms with data available. Aconitine is a plant toxin found in species of wolfsbane (Aconitum genus). It is a neurotoxin previously used as an antipyretic and analgesic, and still has some limited application in herbal medicine. (L1235). The toxic effects of Aconitine have been tested in a variety of different test animals, including mammals (dog, cat, guinea pig, mouse, rat and rabbit), frogs and pigeons. Depending on the route of exposure, the observed toxic effects were: local anesthetic effect, diarrhea, convulsions, arrhythmias or death. According to a review of different reports of aconite poisoning in humans the following clinical features were observed: Neurological, Cardiovascular, Ventricular arrhythmias, Gastrointestinal. A C19 norditerpenoid alkaloid (DITERPENES) from the root of ACONITUM; DELPHINIUM and larkspurs. It activates VOLTAGE-GATED SODIUM CHANNELS. It has been used to induce ARRHYTHMIAS in experimental animals and it has anti-inflammatory and anti-neuralgic properties. See also: Aconitum coreanum root (part of). Origin: Plant; SubCategory_DNP: Terpenoid alkaloids, Diterpene alkaloid, Aconitum alkaloid Annotation level-1 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2309

   

(RS)-3,5-DHPG

(S)-3,5-Dihydroxyphenylglycine

C8H9NO4 (183.0532)


D018377 - Neurotransmitter Agents > D018683 - Excitatory Amino Acid Agents > D018691 - Excitatory Amino Acid Antagonists D018377 - Neurotransmitter Agents > D018683 - Excitatory Amino Acid Agents > D018690 - Excitatory Amino Acid Agonists DHPG ((RS)-3,5-DHPG) is an amino acid, which acts as a selective and potent agonist of group I mGluR (mGluR 1 and mGluR 5), shows no effect on Group II or Group III mGluRs[1]. DHPG ((RS)-3,5-DHPG) is also an effective antagonist of mGluRs linked to phospholipase D[2].

   

Carnosine

(2S)-2-(3-aminopropanoylamino)-3-(1H-imidazol-5-yl)propanoic acid

C9H14N4O3 (226.1066)


Carnosine, which is also known as beta-alanyl-L-histidine) is a dipeptide consisting of the amino acids beta-alanine and histidine. It is found exclusively in animal tissues and is naturally produced in the body by the liver. Carnosine has a pKa value of 6.83, making it a good buffer for the pH range of animal muscles. Since beta-alanine is a non-proteogenic amino acid and is not incorporated into proteins, carnosine can be stored at relatively high concentrations (millimolar) in muscles, with concentrations as high as 17–25 mmol/kg (dry muscle). Carnosine is also highly concentrated in brain tissues. Carnosine has been shown to scavenge reactive oxygen species (ROS) as well as alpha-beta unsaturated aldehydes formed from peroxidation of fatty acids during oxidative stress. The antioxidant mechanism of carnosine is attributed to its chelating effect against divalent metal ions, superoxide dismutase (SOD)-like activity, as well as its ROS and free radicals scavenging ability (PMID: 16406688). Carnosine also buffers muscle cells, and acts as a neurotransmitter in the brain. Carnosine has the potential to suppress many of the biochemical changes that accompany ageing (e.g. protein oxidation, glycation, AGE formation, and cross-linking) and associated pathologies (PMID: 16804013). Some autistic patients take carnosine as a dietary supplement and attribute an improvement in their condition to it. Supplemental carnosine may increase corticosterone levels. This may explain the "hyperactivity" seen in autistic subjects at higher doses. A positive association between muscle tissue carnosine concentration and exercise performance has been found. β-Alanine supplementation is thought increase exercise performance by promoting carnosine production in muscle. Exercise has conversely been found to increase muscle carnosine concentrations, and muscle carnosine content is higher in athletes engaging in anaerobic exercise. Carnosine is also a biomarker for the consumption of meat. Elevated levels of urinary and plasma carnosine are associated with carnosinuria (also known as carnosinemia), which is an inborn error of metabolism. caused by a deficiency of the enzyme carnosinase. Carnosinas cleaves carnosine into its constituent amino acids: β-Alanine and histidine. Carnonsinemia results in an excess of carnosine in the urine, cerebrospinal fluid, blood, and nervous tissue. A variety of neurological symptoms have been associated with carnosinemia. They include: hypotonia, developmental delay, mental retardation, degeneration of axons, sensory neuropathy, tremors, demyelinization, gray matter anomalies, myoclonic seizures, and loss of purkinje fibers. [Spectral] Carnosine (exact mass = 226.10659) and L-Lysine (exact mass = 146.10553) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. L-Carnosine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=305-84-0 (retrieved 2024-07-02) (CAS RN: 305-84-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging. L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging. L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging.

   

triallate

N,N-bis(propan-2-yl)[(2,3,3-trichloroprop-2-en-1-yl)sulfanyl]formamide

C10H16Cl3NOS (303.0018)


CONFIDENCE standard compound; EAWAG_UCHEM_ID 3725 CONFIDENCE standard compound; INTERNAL_ID 2627 CONFIDENCE standard compound; INTERNAL_ID 8488 D010575 - Pesticides > D006540 - Herbicides D016573 - Agrochemicals

   

Zoxazolamine

5-chloro-2,3-dihydro-1,3-benzoxazol-2-imine

C7H5ClN2O (168.009)


D018501 - Antirheumatic Agents > D006074 - Gout Suppressants > D014528 - Uricosuric Agents D018373 - Peripheral Nervous System Agents > D009465 - Neuromuscular Agents C78281 - Agent Affecting Musculoskeletal System > C29696 - Muscle Relaxant C26170 - Protective Agent > C921 - Uricosuric Agent D002491 - Central Nervous System Agents

   

Disopyramide

alpha-(2-(Diisopropylamino)ethyl)-alpha-phenyl-2-pyridineacetamide

C21H29N3O (339.2311)


A class I anti-arrhythmic agent (one that interferes directly with the depolarization of the cardiac membrane and thus serves as a membrane-stabilizing agent) with a depressant action on the heart similar to that of guanidine. It also possesses some anticholinergic and local anesthetic properties. [PubChem] C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BA - Antiarrhythmics, class ia D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers > D061567 - Voltage-Gated Sodium Channel Blockers C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker

   

Mepivacaine

N-(2,6-Dimethylphenyl)-1-methyl-2-piperidinecarboxamide

C15H22N2O (246.1732)


A local anesthetic that is chemically related to bupivacaine but pharmacologically related to lidocaine. It is indicated for infiltration, nerve block, and epidural anesthesia. Mepivacaine is effective topically only in large doses and therefore should not be used by this route. (From AMA Drug Evaluations, 1994, p168) D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D000777 - Anesthetics N - Nervous system > N01 - Anesthetics > N01B - Anesthetics, local > N01BB - Amides D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents C78272 - Agent Affecting Nervous System > C245 - Anesthetic Agent CONFIDENCE standard compound; EAWAG_UCHEM_ID 3126

   

Pilocarpine

(3S-cis)-3-Ethyldihydro-4-[(1-methyl-1H-imidazol-5-yl)methyl]-2(3H)-furanone

C11H16N2O2 (208.1212)


Pilocarpine is only found in individuals that have used or taken this drug. It is a slowly hydrolyzed muscarinic agonist with no nicotinic effects. Pilocarpine is used as a miotic and in the treatment of glaucoma. [PubChem]Pilocarpine is a cholinergic parasympathomimetic agent. It increase secretion by the exocrine glands, and produces contraction of the iris sphincter muscle and ciliary muscle (when given topically to the eyes) by mainly stimulating muscarinic receptors. S - Sensory organs > S01 - Ophthalmologicals > S01E - Antiglaucoma preparations and miotics > S01EB - Parasympathomimetics D018377 - Neurotransmitter Agents > D018678 - Cholinergic Agents > D018679 - Cholinergic Agonists D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D008916 - Miotics N - Nervous system > N07 - Other nervous system drugs > N07A - Parasympathomimetics C78272 - Agent Affecting Nervous System > C47796 - Cholinergic Agonist CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2265 Pilocarpine is a selective M3-type muscarinic acetylcholine receptor (M3 muscarinic receptor) agonist.

   

Esmolol

methyl 3-(4-{2-hydroxy-3-[(propan-2-yl)amino]propoxy}phenyl)propanoate

C16H25NO4 (295.1783)


Esmolol (trade name Brevibloc) is a cardioselective beta1 receptor blocker with rapid onset, a very short duration of action, and no significant intrinsic sympathomimetic or membrane stabilising activity at therapeutic dosages. Esmolol decreases the force and rate of heart contractions by blocking beta-adrenergic receptors of the sympathetic nervous system, which are found in the heart and other organs of the body. Esmolol prevents the action of two naturally occurring substances: epinephrine and norepinephrine. C - Cardiovascular system > C07 - Beta blocking agents > C07A - Beta blocking agents > C07AB - Beta blocking agents, selective C78272 - Agent Affecting Nervous System > C29747 - Adrenergic Agent > C72900 - Adrenergic Antagonist D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents > D018674 - Adrenergic Antagonists

   

Amiodarone

{2-[4-(2-butyl-1-benzofuran-3-carbonyl)-2,6-diiodophenoxy]ethyl}diethylamine

C25H29I2NO3 (645.0237)


Amiodarone is only found in individuals that have used or taken this drug. It is an antianginal and antiarrhythmic drug. It increases the duration of ventricular and atrial muscle action by inhibiting Na,K-activated myocardial adenosine triphosphatase. There is a resulting decrease in heart rate and in vascular resistance. [PubChem]The antiarrhythmic effect of amiodarone may be due to at least two major actions. It prolongs the myocardial cell-action potential (phase 3) duration and refractory period and acts as a noncompetitive a- and b-adrenergic inhibitor. CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9504; ORIGINAL_PRECURSOR_SCAN_NO 9502 CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9437; ORIGINAL_PRECURSOR_SCAN_NO 9432 CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9523; ORIGINAL_PRECURSOR_SCAN_NO 9522 CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9470; ORIGINAL_PRECURSOR_SCAN_NO 9468 CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9458; ORIGINAL_PRECURSOR_SCAN_NO 9457 CONFIDENCE standard compound; INTERNAL_ID 378; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9497; ORIGINAL_PRECURSOR_SCAN_NO 9495 C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BD - Antiarrhythmics, class iii D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065609 - Cytochrome P-450 CYP1A2 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065688 - Cytochrome P-450 CYP2C9 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065690 - Cytochrome P-450 CYP2D6 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065692 - Cytochrome P-450 CYP3A Inhibitors C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials D002317 - Cardiovascular Agents > D026902 - Potassium Channel Blockers D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents CONFIDENCE standard compound; EAWAG_UCHEM_ID 3067 CONFIDENCE standard compound; INTERNAL_ID 2733 D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

   

Monoethylglycinexylidide

N-(2,6-Dimethylphenyl)-2-(ethylamino)acetamide

C12H18N2O (206.1419)


Monoethylglycinexylidide, also known as norlidocaine or MEGX, belongs to the class of organic compounds known as alpha-amino acid amides. These are amide derivatives of alpha-amino acids. Monoethylglycinexylidide is a very strong basic compound (based on its pKa). Monoethylglycinexylidide is a metabolite of lidocaine, also known as lignocaine. Lidocaine (trade name: Xylocaine) is a common local anesthetic and antiarrhythmic drug. Lidocaine is used topically to relieve itching, burning, and pain from skin inflammations, is injected as a dental anesthetic, or is injected as a local anesthetic for minor surgery (Wikipedia). Monoethylglycinexylidide and formaldehyde can be biosynthesized from lidocaine via the enzymes cytochrome P450 1A2 and cytochrome P450 3A4. CONFIDENCE Transformation product with Reference Standard (Level 1); INTERNAL_ID 802 CONFIDENCE standard compound; EAWAG_UCHEM_ID 3471 CONFIDENCE standard compound; INTERNAL_ID 2113

   

Mexiletine

Boehringer ingelheim brand OF mexiletine hydrochloride

C11H17NO (179.131)


Mexiletine is only found in individuals that have used or taken this drug. It is an antiarrhythmic agent pharmacologically similar to lidocaine. It may have some anticonvulsant properties. [PubChem]Mexiletine, like lidocaine, inhibits the inward sodium current required for the initiation and conduction of impulses, thus reducing the rate of rise of the action potential, Phase 0. It achieves this reduced sodium current by inhibiting sodium channels. Mexiletine decreases the effective refractory period (ERP) in Purkinje fibers in the heart. The decrease in ERP is of lesser magnitude than the decrease in action potential duration (APD), which results in an increase in the ERP/APD ratio. It does not significantly affect resting membrane potential or sinus node automaticity, left ventricular function, systolic arterial blood pressure, atrioventricular (AV) conduction velocity, or QRS or QT intervals C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BB - Antiarrhythmics, class ib D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers > D061567 - Voltage-Gated Sodium Channel Blockers C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents CONFIDENCE standard compound; EAWAG_UCHEM_ID 3010 D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker

   

Pentazocine

(1R,9R,13R)-1,13-dimethyl-10-(3-methylbut-2-en-1-yl)-10-azatricyclo[7.3.1.0²,⁷]trideca-2,4,6-trien-4-ol

C19H27NO (285.2093)


Pentazocine is only found in individuals that have used or taken this drug. It is the first mixed agonist-antagonist analgesic to be marketed. It is an agonist at the kappa and sigma opioid receptors and has a weak antagonist action at the mu receptor. (From AMA Drug Evaluations Annual, 1991, p97)The preponderance of evidence suggests that pentazocine antagonizes the opioid effects by competing for the same receptor sites, especially the opioid mu receptor. D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D009294 - Narcotics D002492 - Central Nervous System Depressants > D009294 - Narcotics > D053610 - Opiate Alkaloids N - Nervous system > N02 - Analgesics > N02A - Opioids > N02AD - Benzomorphan derivatives D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents C78272 - Agent Affecting Nervous System > C67413 - Opioid Receptor Agonist D002491 - Central Nervous System Agents > D009292 - Narcotic Antagonists D002491 - Central Nervous System Agents > D000700 - Analgesics

   

Clofilium

Clofilium

C21H37ClN+ (338.2614)


C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent D002317 - Cardiovascular Agents > D026902 - Potassium Channel Blockers D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D049990 - Membrane Transport Modulators

   

1-Naphthylamine

alpha-Aminonaphthalene

C10H9N (143.0735)


CONFIDENCE standard compound; INTERNAL_ID 8002 D009676 - Noxae > D002273 - Carcinogens

   

Homocarnosine

(2S)-2-(4-aminobutanamido)-3-(1H-imidazol-4-yl)propanoic acid

C10H16N4O3 (240.1222)


Homocarnosine is a normal human metabolite, the brain-specific dipeptide of gamma-aminobutyric acid (GABA) and histidine. (PMID 1266573). Increased concentration of CSF homocarnosine has been found in familial spastic paraplegia. (PMID 842287). Homocarnosinosis (an inherited disorder, OMIM 236130) is characterized by an elevated level of the dipeptide homocarnosine (Hca) in the Cerebrospinal fluid (CSF) and the brain and by carnosinuria and serum carnosinase deficiency, and can co-exist with paraplegia, retinitis pigmentosa, and a progressive mental deficiency. (PMID 3736769). In glial tumors of human brain the content of homocarnosine has been found to be lower than in brain tissue (PMID 1032224), while an increase in content of homocarnosine was observed in brain tissue of animals under experimental trauma of cranium. (PMID 1025883). Homocarnosine is a normal human metabolite, the brain-specific dipeptide of gamma-aminobutyric acid (GABA) and histidine. (PMID 1266573) Acquisition and generation of the data is financially supported in part by CREST/JST. KEIO_ID H013; [MS3] KO008992 KEIO_ID H013; [MS2] KO008991 KEIO_ID H013

   

D-Ribose

(3R,4S,5R)-5-(Hydroxymethyl)tetrahydrofuran-2,3,4-triol

C5H10O5 (150.0528)


D-Ribose, commonly referred to as simply ribose, is a five-carbon sugar found in all living cells. Ribose is not an essential nutrient because it can be synthesized by almost every tissue in the body from other substances, such as glucose. It is vital for life as a component of DNA, RNA, ATP, ADP, and AMP. In nature, small amounts of ribose can be found in ripe fruits and vegetables. Brewers yeast, which has a high concentration of RNA, is another rich source of ribose. D-ribose is also a component of many so-called energy drinks and anti-ageing products available on the market today. Ribose is a structural component of ATP, which is the primary energy source for exercising muscle. The adenosine component is an adenine base attached to the five-carbon sugar ribose. ATP provides energy to working muscles by releasing a phosphate group, hence becoming ADP, which in turn may release a phosphate group, then becoming AMP. During intense muscular activity, the total amount of ATP available is quickly depleted. In an effort to correct this imbalance, AMP is broken down in the muscle and secreted from the cell. Once the breakdown products of AMP are released from the cell, the energy potential (TAN pool) of the muscle is reduced and ATP must then be reformed using ribose. Ribose helps restore the level of adenine nucleotides by bypassing the rate-limiting step in the de novo (oxidative pentose phosphate) pathway, which regenerates phosphoribosyl pyrophosphate (PRPP), the essential precursor for ATP. If ribose is not readily available to a cell, glucose may be converted to ribose. Ribose supplementation has been shown to increase the rate of ATP resynthesis following intense exercise. The use of ribose in men with severe coronary artery disease resulted in improved exercise tolerance. Hence, there is interest in the potential of ribose supplements to boost muscular performance in athletic activities (PMID: 17618002, Curr Sports Med Rep. 2007 Jul;6(4):254-7.). Ribose, also known as D-ribose or alpha-delta-ribose-5, is a member of the class of compounds known as pentoses. Pentoses are monosaccharides in which the carbohydrate moiety contains five carbon atoms. Ribose is very soluble (in water) and a very weakly acidic compound (based on its pKa). Ribose can be found in a number of food items such as lemon verbena, devilfish, watercress, and chicory roots, which makes ribose a potential biomarker for the consumption of these food products. Ribose can be found primarily in most biofluids, including urine, cerebrospinal fluid (CSF), saliva, and feces, as well as throughout most human tissues. Ribose exists in all living species, ranging from bacteria to humans. In humans, ribose is involved in the pentose phosphate pathway. Ribose is also involved in few metabolic disorders, which include glucose-6-phosphate dehydrogenase deficiency, ribose-5-phosphate isomerase deficiency, and transaldolase deficiency. Moreover, ribose is found to be associated with ribose-5-phosphate isomerase deficiency. The ribose β-D-ribofuranose forms part of the backbone of RNA. It is related to deoxyribose, which is found in DNA. Phosphorylated derivatives of ribose such as ATP and NADH play central roles in metabolism. cAMP and cGMP, formed from ATP and GTP, serve as secondary messengers in some signalling pathways . D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1]. D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1]. D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1].

   

N-Carbamoylsarcosine

[Carbamoyl(methyl)amino]acetic acid

C4H8N2O3 (132.0535)


N-Carbamoylsarcosine is an intermediate in arginine and proline metabolism. It is also involved in a metabolic pathway for the degradation of creatinine. In this pathway, creatinine is not hydrolyzed back to creatine. Instead, it is deaminated to N-methylhydantoin, releasing an amonia molecule, by the action of creatinine deaminase (also known as creatinine iminohydrolase). N-methylhydantoin is then hydrolyzed to N-carbamoylsarcosine, by the action of N-methylhydantoin amidohydrolase, at the expense of one ATP molecule. N-carbamoylsarcosine is deaminated further to sarcosine by N-carbamoylsarcosine amidohydrolase, releasing a second ammonia molecule. In the last step of this pathway, sarcosine is hydrolyzed to glycine and formaldehyde, by either sarcosine dehydrogenase or sarcosine oxidase. [HMDB] N-Carbamoylsarcosine is an intermediate in arginine and proline metabolism. It is also involved in a metabolic pathway for the degradation of creatinine. In this pathway, creatinine is not hydrolyzed back to creatine. Instead, it is deaminated to N-methylhydantoin, releasing an amonia molecule, by the action of creatinine deaminase (also known as creatinine iminohydrolase). N-methylhydantoin is then hydrolyzed to N-carbamoylsarcosine, by the action of N-methylhydantoin amidohydrolase, at the expense of one ATP molecule. N-carbamoylsarcosine is deaminated further to sarcosine by N-carbamoylsarcosine amidohydrolase, releasing a second ammonia molecule. In the last step of this pathway, sarcosine is hydrolyzed to glycine and formaldehyde, by either sarcosine dehydrogenase or sarcosine oxidase.

   

5-O-(1-Carboxyvinyl)-3-phosphoshikimate

5-(1-carboxyethenoxy)-4-hydroxy-3-phosphonooxycyclohexene-1-carboxylic acid

C10H13O10P (324.0246)


   

Megestrol

(8R,9S,10R,13S,14S,17R)-17-acetyl-17-hydroxy-6,10,13-trimethyl-2,8,9,11,12,14,15,16-octahydro-1H-cyclopenta[a]phenanthren-3-one

C22H30O3 (342.2195)


G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03A - Hormonal contraceptives for systemic use > G03AC - Progestogens G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03D - Progestogens > G03DB - Pregnadien derivatives L - Antineoplastic and immunomodulating agents > L02 - Endocrine therapy > L02A - Hormones and related agents > L02AB - Progestogens C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone D012102 - Reproductive Control Agents > D003270 - Contraceptive Agents D000970 - Antineoplastic Agents

   

Ethosuximide

3-Ethyl-3-methyl-2,5-pyrrolidinedione

C7H11NO2 (141.079)


Ethosuximide is only found in individuals that have used or taken this drug. It is an anticonvulsant especially useful in the treatment of absence seizures unaccompanied by other types of seizures. [PubChem]Binds to T-type voltage sensitive calcium channels. Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1G gives rise to T-type calcium currents. T-type calcium channels belong to the "low-voltage activated (LVA)" group and are strongly blocked by mibefradil. A particularity of this type of channels is an opening at quite negative potentials and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes. N - Nervous system > N03 - Antiepileptics > N03A - Antiepileptics > N03AD - Succinimide derivatives C78272 - Agent Affecting Nervous System > C264 - Anticonvulsant Agent D002491 - Central Nervous System Agents > D000927 - Anticonvulsants

   

7-Ethyl-10-hydroxycamptothecin

(19S)-10,19-diethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.0^{2,11}.0^{4,9}.0^{15,20}]henicosa-1(21),2(11),3,5,7,9,15(20)-heptaene-14,18-dione

C22H20N2O5 (392.1372)


SN-38 is a member of the class of pyranoindolizinoquinolines that is (4S)-pyrano[3,4:6,7]indolizino[1,2-b]quinoline-3,14-dione bearing two additional ethyl substituents at positions 4 and 11 as well as two additional hydroxy substituents at positions 4 and 9. It is the active metabolite of irinotecan and is ~1000 times more active than irinotecan itself. It has a role as an apoptosis inducer, an EC 5.99.1.2 (DNA topoisomerase) inhibitor, a drug metabolite and an antineoplastic agent. It is a pyranoindolizinoquinoline, a delta-lactone, a tertiary alcohol and a member of phenols. 7-ethyl-10-hydroxycamptothecin (SN 38) is a liposomal formulation of the active metabolite of Irinotecan [DB00762], a chemotherapeutic pro-drug approved for the treatment of advanced colorectal cancer. SN 38 has been used in trials studying the treatment of Cancer, Advanced Solid Tumors, Small Cell Lung Cancer, Metastatic Colorectal Cancer, and Triple Negative Breast Cancer, among others. 7-Ethyl-10-hydroxycamptothecin is a natural product found in Apis cerana with data available. A semisynthetic camptothecin derivative that inhibits DNA TOPOISOMERASE I to prevent nucleic acid synthesis during S PHASE. It is used as an antineoplastic agent for the treatment of COLORECTAL NEOPLASMS and PANCREATIC NEOPLASMS. 7-Ethyl-10-hydroxycamptothecin (SN38) is the active metabolite of irinotecan (an analog of camptothecin - a topoisomerase I inhibitor); it is 1000 times more active than irinotecan itself. In vitro cytotoxicity assays show that the potency of SN-38 relative to irinotecan varies from 2- to 2000-fold. SN38 is metabolized via glucoronidation by UGT1A1. (Wikipedia) 7-Ethyl-10-hydroxycamptothecin (SN38), the active metabolite of irinotecan, exerts a 100-fold to 1000-fold higher effect than irinotecan itself against several tumor cell lines. (PMID: 23233044) Among five chemotherapeutic agents commonly used for breast cancer treatment, only an irinotecan metabolite SN38 showed additive antitumor activity with olaparib. (PMID: 22454224) Metabolism of irinotecan to SN38 is inefficient and subject to considerable patient-to-patient variability. One approach to more controlled administration of the anticancer agent is direct administration of the active SN38. (PMID: 23299391) A member of the class of pyranoindolizinoquinolines that is (4S)-pyrano[3,4:6,7]indolizino[1,2-b]quinoline-3,14-dione bearing two additional ethyl substituents at positions 4 and 11 as well as two additional hydroxy substituents at positions 4 and 9. It is the active metabolite of irinotecan and is ~1000 times more active than irinotecan itself. SN-38 (NK012) is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 (NK012) inhibits DNA and RNA synthesis with IC50s of 0.077 and 1.3 μM, respectively[1][2][3][4]. SN-38 (NK012) is an active metabolite of the Topoisomerase I inhibitor Irinotecan. SN-38 (NK012) inhibits DNA and RNA synthesis with IC50s of 0.077 and 1.3 μM, respectively[1][2][3][4].

   

nonactin

Upjohn 170t (high melting)

C40H64O12 (736.4398)


   

ppads

Pyridoxalphosphate-6-azophenyl-2,4-disulfonic acid

C14H14N3O12PS2 (510.9757)


D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors

   

10,10-Bis(pyridin-4-ylmethyl)anthracen-9-one

10,10-bis[(pyridin-4-yl)methyl]-9,10-dihydroanthracen-9-one

C26H20N2O (376.1576)


   
   

3,5-Dihydroxyphenylglycine

2-amino-2-(3,5-dihydroxyphenyl)acetic acid

C8H9NO4 (183.0532)


D018377 - Neurotransmitter Agents > D018683 - Excitatory Amino Acid Agents > D018691 - Excitatory Amino Acid Antagonists D018377 - Neurotransmitter Agents > D018683 - Excitatory Amino Acid Agents > D018690 - Excitatory Amino Acid Agonists DHPG ((RS)-3,5-DHPG) is an amino acid, which acts as a selective and potent agonist of group I mGluR (mGluR 1 and mGluR 5), shows no effect on Group II or Group III mGluRs[1]. DHPG ((RS)-3,5-DHPG) is also an effective antagonist of mGluRs linked to phospholipase D[2].

   

Ppads

4-(2-{4-formyl-5-hydroxy-6-methyl-3-[(phosphonooxy)methyl]pyridin-2-yl}diazen-1-yl)benzene-1,3-disulfonic acid

C14H14N3O12PS2 (510.9757)


D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors

   

Isoalantolactone

Isoalantolactone

C15H20O2 (232.1463)


relative retention time with respect to 9-anthracene Carboxylic Acid is 1.234 Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent.

   

Pilocarpine

Pilocarpine

C11H16N2O2 (208.1212)


S - Sensory organs > S01 - Ophthalmologicals > S01E - Antiglaucoma preparations and miotics > S01EB - Parasympathomimetics D018377 - Neurotransmitter Agents > D018678 - Cholinergic Agents > D018679 - Cholinergic Agonists D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D008916 - Miotics N - Nervous system > N07 - Other nervous system drugs > N07A - Parasympathomimetics C78272 - Agent Affecting Nervous System > C47796 - Cholinergic Agonist Annotation level-1 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.053 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.052 Pilocarpine is a selective M3-type muscarinic acetylcholine receptor (M3 muscarinic receptor) agonist.

   

carnosine

L-Carnosine

C9H14N4O3 (226.1066)


A dipeptide that is the N-(beta-alanyl) derivative of L-histidine. C26170 - Protective Agent > C275 - Antioxidant L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging. L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging. L-Carnosine is a dipeptide of the amino acids beta-alanine and histidine and has the potential to suppress many of the biochemical changes that accompany aging.

   

Homocarnosine

g-Aminobutyryl histidine

C10H16N4O3 (240.1222)


A histidine derivative that is histidine in which one of the hydrogens attached to the alpha-amino group has been replaced by a 4-aminobutanoyl group.

   

amiodarone

amiodarone

C25H29I2NO3 (645.0237)


C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BD - Antiarrhythmics, class iii D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065609 - Cytochrome P-450 CYP1A2 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065688 - Cytochrome P-450 CYP2C9 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065690 - Cytochrome P-450 CYP2D6 Inhibitors D004791 - Enzyme Inhibitors > D065607 - Cytochrome P-450 Enzyme Inhibitors > D065692 - Cytochrome P-450 CYP3A Inhibitors C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials D002317 - Cardiovascular Agents > D026902 - Potassium Channel Blockers D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

   

ESMOLOL

ESMOLOL

C16H25NO4 (295.1783)


C - Cardiovascular system > C07 - Beta blocking agents > C07A - Beta blocking agents > C07AB - Beta blocking agents, selective C78272 - Agent Affecting Nervous System > C29747 - Adrenergic Agent > C72900 - Adrenergic Antagonist D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents > D018674 - Adrenergic Antagonists

   

mepivacaine

mepivacaine

C15H22N2O (246.1732)


D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D000777 - Anesthetics N - Nervous system > N01 - Anesthetics > N01B - Anesthetics, local > N01BB - Amides D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents C78272 - Agent Affecting Nervous System > C245 - Anesthetic Agent

   

disopyramide

disopyramide

C21H29N3O (339.2311)


C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BA - Antiarrhythmics, class ia D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers > D061567 - Voltage-Gated Sodium Channel Blockers C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker

   

Mexiletine

1-(2,6-Dimethylphenoxy)-2-propanamine

C11H17NO (179.131)


C - Cardiovascular system > C01 - Cardiac therapy > C01B - Antiarrhythmics, class i and iii > C01BB - Antiarrhythmics, class ib D002317 - Cardiovascular Agents > D026941 - Sodium Channel Blockers > D061567 - Voltage-Gated Sodium Channel Blockers C78274 - Agent Affecting Cardiovascular System > C47793 - Antiarrhythmic Agent D002317 - Cardiovascular Agents > D000889 - Anti-Arrhythmia Agents D049990 - Membrane Transport Modulators C93038 - Cation Channel Blocker

   

ethosuximide

ethosuximide

C7H11NO2 (141.079)


N - Nervous system > N03 - Antiepileptics > N03A - Antiepileptics > N03AD - Succinimide derivatives C78272 - Agent Affecting Nervous System > C264 - Anticonvulsant Agent D002491 - Central Nervous System Agents > D000927 - Anticonvulsants

   

1-NAPHTHYLAMINE

1-Aminonaphthalene

C10H9N (143.0735)


A naphthylamine that is naphthalene substituted by an amino group at position 1. D009676 - Noxae > D002273 - Carcinogens

   

AI3-31148

Naphtho[2,3-b]furan-2(3H)-one, decahydro-8a-methyl-3,5-bis(methylene)-, [3aR-(3a.alpha.,4a.alpha.,8a.beta.,9a.alpha.)]-

C15H20O2 (232.1463)


Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent.

   

Isohelenin

Naphtho(2,3-b)furan-2(3H)-one, decahydro-8a-methyl-3,5-bis(methylene)-, (3aR-(3a alpha,4a alpha,8a beta,9a alpha))-

C15H20O2 (232.1463)


Isoalantolactone is a sesquiterpene lactone of the eudesmanolide group. It has been isolated from Inula helenium. It has a role as an apoptosis inducer, an antifungal agent and a plant metabolite. It is a sesquiterpene lactone and a eudesmane sesquiterpenoid. Isoalantolactone is a natural product found in Eupatorium cannabinum, Critonia quadrangularis, and other organisms with data available. A sesquiterpene lactone of the eudesmanolide group. It has been isolated from Inula helenium. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent. Isoalantolactone is an apoptosis inducer, which also acts as an alkylating agent.

   

triallate

triallate

C10H16Cl3NOS (303.0018)


D010575 - Pesticides > D006540 - Herbicides D016573 - Agrochemicals

   

D-Ribofuranose

D-Ribofuranose

C5H10O5 (150.0528)


A ribofuranose having D-configuration. D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1]. D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1]. D-Ribose(mixture of isomers) is an energy enhancer, and acts as a sugar moiety of ATP, and widely used as a metabolic therapy supplement for chronic fatigue syndrome or cardiac energy metabolism. D-Ribose(mixture of isomers) is active in protein glycation, induces NF-κB inflammation in a RAGE-dependent manner[1].

   

2-Fluorobenzamide

N-Carbamoylsarcosine

C4H8N2O3 (132.0535)


   

5-O-(1-carboxyvinyl)-3-phosphoshikimic acid

5-O-(1-carboxyvinyl)-3-phosphoshikimic acid

C10H13O10P (324.0246)


   

(1-Benzyl-1H-quinolin-4-ylidene)-pentyl-amine

(1-Benzyl-1H-quinolin-4-ylidene)-pentyl-amine

C21H24N2 (304.1939)


   

Monoethylglycinexylidide

Monoethylglycinexylidide

C12H18N2O (206.1419)


Amino acid amide formed from 2,6-dimethylaniline and N-ethylglycine components; an active metabolite of lidocaine, formed by oxidative deethylation. Used as an indicator of hepatic function.

   

Talwin

Talwin

C19H27NO (285.2093)


D002491 - Central Nervous System Agents > D002492 - Central Nervous System Depressants > D009294 - Narcotics D002492 - Central Nervous System Depressants > D009294 - Narcotics > D053610 - Opiate Alkaloids D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D009292 - Narcotic Antagonists D002491 - Central Nervous System Agents > D000700 - Analgesics

   

Zoxazolamine

Zoxazolamine

C7H5ClN2O (168.009)


D018501 - Antirheumatic Agents > D006074 - Gout Suppressants > D014528 - Uricosuric Agents D018373 - Peripheral Nervous System Agents > D009465 - Neuromuscular Agents C78281 - Agent Affecting Musculoskeletal System > C29696 - Muscle Relaxant C26170 - Protective Agent > C921 - Uricosuric Agent D002491 - Central Nervous System Agents

   

XE991

10,10-Bis(pyridin-4-ylmethyl)anthracen-9-one

C26H20N2O (376.1576)