Exact Mass: 243.0756
Exact Mass Matches: 243.0756
Found 100 metabolites which its exact mass value is equals to given mass value 243.0756,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
Cytidine
Cytidine is a nucleoside that is composed of the base cytosine linked to the five-carbon sugar D-ribose. Cytidine is a pyrimidine that besides being incorporated into nucleic acids, can serve as a substrate for the salvage pathway of pyrimidine nucleotide synthesis. It is a precursor of cytidine triphosphate (CTP) needed in the phosphatidylcholine (PC) and phosphatidylethanolamine (PE) biosynthetic pathways. These variations probably reflect the species differences in cytidine deaminase, the enzyme that converts cytidine to uridine in the body. The transport of cytidine into the brains extracellular fluid, and then into neurons and glia, are essential prerequisites for cytidine to be utilized in the brain. An efficient mechanism mediating the brain uptake of circulating cytidine has not yet been demonstrated. The biosynthesis of PC, the most abundant phosphatide in the brain, via the Kennedy pathway requires phosphocholine and cytidine triphosphate (CTP), a cytidine nucleotide involved in the rate-limiting step. The enzyme that converts CTP to endogenous CDP-choline (CTP:phosphocholine cytidylyltransferase) is unsaturated at physiological brain CTP levels. APOBEC is a family of enzymes that has been discovered with the ability to deaminate cytidines on RNA or DNA. The human apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G protein (APOBEC3G, or hA3G), provides cells with an intracellular antiretroviral activity that is associated with the hypermutation of viral DNA through cytidine deamination. Indeed, hA3G belongs to a family of vertebrate proteins that contains one or two copies of a signature sequence motif unique to cytidine deaminases (CTDAs) (PMID: 16769123, 15780864, 16720547). Cytidine is a nucleoside that is composed of the base cytosine linked to the five-carbon sugar D-ribose. Cytidine is a pyrimidine that besides being incorporated into nucleic acids, can serve as substrate for the salvage pathway of pyrimidine nucleotide synthesis; as precursor of the cytidine triphosphate (CTP) needed in the phosphatidylcholine (PC) and phosphatidylethanolamine (PE) biosynthetic pathway. These variations probably reflect the species differences in cytidine deaminase, the enzyme that converts cytidine to uridine in the body. The transports of cytidine into the brains extracellular fluid, and then into neurons and glia, are essential prerequisites for cytidine to be utilized in brain. An efficient mechanism mediating the brain uptake of circulating cytidine has not yet been demonstrated. The biosynthesis of PC, the most abundant phosphatide in the brain, via the Kennedy pathway requires phosphocholine and cytidine triphosphate (CTP), a cytidine nucleotide, which is involved in the rate-limiting step. The enzyme that converts CTP to endogenous CDP-choline (CTP: phosphocholine cytidylyltransferase) is unsaturated at physiological brain CTP levels. Cytidine is a white crystalline powder. (NTP, 1992) Cytidine is a pyrimidine nucleoside in which cytosine is attached to ribofuranose via a beta-N(1)-glycosidic bond. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is functionally related to a cytosine. Cytidine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Cytidine is a natural product found in Fritillaria thunbergii, Castanopsis fissa, and other organisms with data available. Cytidine is a pyrimidine nucleoside comprised of a cytosine bound to ribose via a beta-N1-glycosidic bond. Cytidine is a precursor for uridine. Both cytidine and uridine are utilized in RNA synthesis. Cytidine is a metabolite found in or produced by Saccharomyces cerevisiae. A pyrimidine nucleoside that is composed of the base CYTOSINE linked to the five-carbon sugar D-RIBOSE. A pyrimidine nucleoside in which cytosine is attached to ribofuranose via a beta-N(1)-glycosidic bond. [Spectral] Cytidine (exact mass = 243.08552) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) and NAD+ (exact mass = 663.10912) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Cytidine (exact mass = 243.08552) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Cytidine (exact mass = 243.08552) and S-Adenosyl-L-homocysteine (exact mass = 384.12159) 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. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3].
gamma-Glutamyl-beta-cyanoalanine
This compound belongs to the family of N-acyl-Alpha Amino Acids. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon).
4-Chloro-[2-(4-Pyridinyl)-1-butenyl]phenol
Cytarabine
Cytarabine, or cytosine arabinoside, a pyrimidine nucleoside analog, is found in mushrooms. Cytarabine is isolated from the mushroom Xerocomus nigromaculatus of unknown palatability. Cytarabine is an antineoplastic anti-metabolite used in the treatment of several forms of leukemia including acute myelogenous leukemia and meningeal leukemia. Cytarabine is an antimetabolite antineoplastic agent that inhibits the synthesis of DNA. Its actions are specific for the S phase of the cell cycle to stop normal cell development and division. Cytarabine is metabolized intracellularly into its active triphosphate form (cytosine arabinoside triphosphate). This metabolite then damages DNA by multiple mechanisms, including the inhibition of alpha-DNA polymerase, inhibition of DNA repair through an effect on beta-DNA polymerase, and incorporation into DNA. The latter mechanism is probably the most important. Cytotoxicity is highly specific for the S phase of the cell cycle. Cytarabine is a chemotherapy agent used mainly in the treatment of hematological malignancies such as acute myeloid leukemia (AML) and non-Hodgkin lymphoma. It is also known as ara C. Cytosine arabinoside is an antimetabolic agent with the chemical name of 1 -arabinofuranosylcytosine. Its mode of action is due to its rapid conversion into cytosine arabinoside triphosphate, which damages DNA when the cell cycle holds in the S phase (synthesis of DNA). Rapidly dividing cells, which require DNA replication for mitosis, are therefore most affected. Cytosine arabinoside also inhibits both DNA and RNA polymerases and nucleotide reductase enzymes needed for DNA synthesis L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents > L01B - Antimetabolites > L01BC - Pyrimidine analogues C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C272 - Antimetabolite D007155 - Immunologic Factors > D007166 - Immunosuppressive Agents D000890 - Anti-Infective Agents > D000998 - Antiviral Agents D009676 - Noxae > D000963 - Antimetabolites COVID info from COVID-19 Disease Map D000970 - Antineoplastic Agents KEIO_ID C119; [MS2] KO008896 KEIO_ID C119 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC50 of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity. Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC50 of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity.
1-[3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-hydroxyhydropyridin-2-one
Arabinofuranosylcytosine
Isolated from the mushroom Xerocomus nigromaculatus of unknown palatability This compound has been identified in human blood as reported by (PMID: 31557052 ). Arabinofuranosylcytosine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Arabinofuranosylcytosine is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources. Arabinofuranosylcytosine (Ara-C), also known as cytarabine, is a chemotherapeutic agent that is widely used in the treatment of various types of cancer, particularly hematological malignancies such as acute myeloid leukemia (AML) and chronic myeloid leukemia (CML). The biological functions of Ara-C are primarily related to its antineoplastic properties, which are derived from its mechanism of action within the cell. Here is a detailed description of its biological functions: 1. **Inhibition of DNA Synthesis**: Ara-C functions as a nucleoside analog, which means it resembles the natural building blocks of DNA. Once inside the cell, Ara-C is converted to its active metabolite, araCTP (arabinofuranosylcytosine triphosphate). AraCTP competes with the natural deoxycytidine triphosphate (dCTP) for incorporation into the growing DNA chain during the S phase of the cell cycle. Because Ara-C lacks a 3'-hydroxyl group, its incorporation into DNA leads to chain termination, effectively stopping DNA synthesis. 2. **Cell Cycle Specificity**: Ara-C is most effective against cells that are actively dividing. Since it targets cells in the S phase of the cell cycle, it is particularly harmful to rapidly dividing cancer cells, which often spend a significant portion of their cycle in this phase. 3. **Inhibition of DNA Repair**: Beyond its direct effect on DNA synthesis, Ara-C can also interfere with DNA repair mechanisms. This is because the incorporation of Ara-C into DNA can cause mispairing and induce DNA damage, which the cell may be unable to repair properly. 4. **Cell Death Induction**: The inhibition of DNA synthesis and the induction of DNA damage can lead to cell death through apoptosis or necrosis. Cells that cannot replicate their DNA or repair the damage caused by Ara-C activation are programmed to die, which is a desirable outcome in the context of cancer treatment. 5. **Immune System Modulation**: In some cases, Ara-C can also modulate the immune system, although this is not its primary function. It can affect the function and proliferation of immune cells, which can have implications for both its therapeutic effects and side effects. 6. **Enzymatic Conversion**: Ara-C must be activated within the cell by the enzyme deoxycytidine kinase (dCK), which phosphorylates it to Ara-CMP (monophosphate), then to Ara-CDP (diphosphate), and finally to Ara-CTP. The efficiency of this conversion can vary between different types of cancer cells and normal cells, contributing to the selectivity of Ara-C's action. 7. **Cross-Linking Potential**: Although less common, Ara-C can also form cross-links with DNA, further complicating DNA structure and function, which can contribute to its cytotoxic effects. The biological functions of Ara-C are complex and can vary depending on the dose, the specific cancer type, and the individual patient's metabolism. Its use is carefully monitored in clinical settings due to its potential for significant side effects, including myelosuppression (decreased production of blood cells), gastrointestinal toxicity, and central nervous system toxicity.
4-Amino-1-[(2R,5R)-5-(hydroxymethyl)-4-sulfanyloxolan-2-yl]pyrimidin-2-one
4-Amino-5-hydroxy-1-[(2R,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one
hydrastinine
Hydrastinine hydrochloride is a major alkaloid constituent in goldenseal (Hydrastis canadensis). Hydrastinine hydrochloride can be used as a haemostatic agent[1].
Cytidine
MS2 deconvoluted using MS2Dec from all ion fragmentation data, MetaboLights identifier MTBLS1040; UHDGCWIWMRVCDJ_STSL_0155_Cytidine_8000fmol_180506_S2_LC02_MS02_107; Spectrum acquired as described in Naz et al 2017 PMID 28641411. Preparation and submission to MassBank of North America by Chaleckis R. and Tada I. MS2 deconvoluted using CorrDec from all ion fragmentation data, MetaboLights identifier MTBLS1040; Spectrum acquired as described in Naz et al 2017 PMID 28641411. Preparation and submission to MassBank of North America by Chaleckis R. and Tada I. relative retention time with respect to 9-anthracene Carboxylic Acid is 0.054 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.051 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.053 Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3].
cytarabine
L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents > L01B - Antimetabolites > L01BC - Pyrimidine analogues C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C272 - Antimetabolite D007155 - Immunologic Factors > D007166 - Immunosuppressive Agents D000890 - Anti-Infective Agents > D000998 - Antiviral Agents D009676 - Noxae > D000963 - Antimetabolites COVID info from COVID-19 Disease Map D000970 - Antineoplastic Agents Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC50 of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity. Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC50 of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity.
1-(1,3-benzodioxol-5-yl)-2-(methylamino)propan-1-one,hydrochloride
(+/-)-7-Hydroxy-1,2,3,4-tetrahydro-3-isoquinoline-4-carboxylic acid methyl ester hydrochloride
(s)-(+)-nalpha-benzyl-nbeta-boc-l-hydrazinotryptophane
3-Deazauridine
C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C272 - Antimetabolite C471 - Enzyme Inhibitor > C2133 - Cytidine Triphosphate Synthetase Inhibitor D009676 - Noxae > D000963 - Antimetabolites D000970 - Antineoplastic Agents 3-Deazauridine (NSC 126849) is a uridine analogue. 3-Deazauridine competitively inhibits cytidine triphosphate synthase to inhibit the biosynthesis of cytidine-5'-triphosphate. 3-Deazauridine acts synergistically with several antineoplastic agents, acting as a biological response modifier[1].
5-Amino-3-methyl-1-(3-nitrophenyl)-1H-pyrazole-4-carbonitrile
TERT-BUTYL (4-CHLOROPYRIMIDIN-2-YL)(METHYL)CARBAMATE
CARBAMIC ACID, (5-AMINO-2-CHLORO-4-PYRIDINYL)-, 1,1-DIMETHYLETHYL ESTER
tert-butyl 2-(2,6-difluoropyridin-3-yl)-2-oxoacetate
3-[N,N-Bis(2-hydroxyethyl)amino]-2-hydroxypropanesulfonic Acid
methyl 2-(azetidin-3-yl)acetate; trifluoroacetic acid
3-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]-1,2,4-oxadiazole-5-carboxylic acid
1H-Pyrrole-3-carboxylicacid, 5-(2-chloroacetyl)-2,4-dimethyl-, ethyl ester
4-Chloro-3-(2-dimethylaminoethoxy)phenylboronic acid
5-Amino-3-methyl-1-(4-nitrophenyl)-1H-pyrazole-4-carbonitrile
ethyl 4-(2-chloroacetyl)-2,5-dimethyl-1H-pyrrole-3-carboxylate
4-AMINO-CHROMAN-8-CARBOXYLIC ACID METHYL ESTER HYDROCHLORIDE
ethyl 2-chloro-4-ethoxy-6-methylpyridine-3-carboxylate
(4-(N,N-Dimethylsulfamoyl)-2-methylphenyl)boronic acid
6-Methoxy-1,2,3,4-tetrahydro-isoquinoline-1-carboxylic acid hydrochloride
2H-Indol-2-one, 7-fluoro-1,3-dihydro-3-hydroxy-3-phenyl-
1-(2-Deoxy-beta-D-erythro-pentofuranosyl)-4-methoxy-1,3,5-triazin-2(1H)-one
3-[N,N-Bis(2-hydroxyethyl)amino]-2-hydroxy-1-propanesulfonic acid
1-METHYL-2-[(4-METHYL-1,3-THIAZOL-2-YL)METHYL]-1H-BENZIMIDAZOLE
3-(hydrazinecarbonyl)-N,N-dimethylbenzenesulfonamide
(5-(N,N-DIMETHYLSULFAMOYL)-2-METHYLPHENYL)BORONIC ACID
2-[2-(1H-tetrazol-5-yl)ethyl]-1H-isoindole-1,3(2H)-dione
N-(2-tert-butylsulfanylethyl)thiophene-2-carboxamide
Biotinate
Conjugate base of biotin arising from deprotonation of the carboxy group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
3,6,8-Trimethyl-2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline
1-(beta-D-xylopyranosyl)cytosine
An N-glycosyl compound that is cytosine in which the proton at position 1 is replaced by a beta-D-xylosyl residue.
gamma-Glutamyl-beta-cyanoalanine
A dipeptide composed of 3-cyano-L-alanine and L-glutamine joined by a peptide linkage formed from the side-chain of glutamine.
α-Cytidine
α-Cytidine is a purine nucleoside analog. Purine nucleoside analogs have broad antitumor activity targeting indolent lymphoid malignancies. Anticancer mechanisms in this process rely on inhibition of DNA synthesis, induction of apoptosis, etc[1].
