Exact Mass: 140.0659672
Exact Mass Matches: 140.0659672
Found 278 metabolites which its exact mass value is equals to given mass value 140.0659672,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
1-methyl-4-imidazoleacetate
Methylimidazoleacetic acid is the main metabolite of histamine. This end product of histamine catabolism is formed by N-methylation in the imidazole ring to methylhistamine by histamine methyltransferase (EC 2.1.1.8) and a subsequent oxidative deamination in the side chain by type B monoamine oxidase (EC 1.4.3.4). Based on studies, it is known that as much as 70 to 80 percent of the histamine metabolized in the body is excreted in the urine as methylimidazoleacetic acid. Thus, urinary methylimidazoleacetic acid being the major and specific histamine metabolite is a clear marker of any changes in histamine metabolism in the body. The urinary excretion of methylimidazoleacetic acid is considered a reliable indicator of histamine turnover rate in the body. The excretion of methylimidazoleacetic acid is higher in men than in women. However, this gender difference is abolished when corrected for creatinine excretion. A possible explanation is that basal histamine turnover is related to body size. There is no significant difference in methylimidazoleacetic acid excretion between smokers and non-smokers when analyzing absolute values (mg/24 h). When using methylimidazoleacetic acid values corrected for creatinine excretion female smokers have significantly higher methylimidazoleacetic acid excretion compared to nonsmokers (PMID:11411609, 7130180, 10350179, 10202992). Methylimidazoleacetic acid is the main metabolite of histamine. This end product of histamine catabolism is formed by N-methylation in the imidazole ring to methylhistamine by histamine methyltransferase (EC 2.1.1.8) and a subsequent oxidative deamination in the side chain by type B monoamine oxidase (EC 1.4.3.4). From studies is known that as much as 70 to 80 percent of the histamine metabolized in the body is excreted in the urine as Methylimidazoleacetic acid. Thus, urinary Methylimidazoleacetic acid being the major and specific histamine metabolite is a clear marker of any changes in histamine metabolism in the body. The urinary excretion of methylimidazoleacetic acid is considered a reliable indicator of histamine turnover rate in the body. The excretion of Methylimidazoleacetic acid is higher in men than women however; this gender difference is abolished when corrected for creatinine excretion. A possible explanation is that basal histamine turnover is related to body size. There is no significant difference in Methylimidazoleacetic acid excretion between smokers and non-smokers when analysing absolute values (mg/24 h). When using Methylimidazoleacetic acid values corrected for creatinine excretion female smokers have significantly higher Methylimidazoleacetic acid excretion compared to nonsmokers. (PMID: 11411609, 7130180, 10350179, 10202992) [HMDB]
Gaboxadol
D018377 - Neurotransmitter Agents > D018682 - GABA Agents > D018755 - GABA Agonists D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000927 - Anticonvulsants C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent D002491 - Central Nervous System Agents > D000700 - Analgesics Same as: D04282 THIP (Gaboxadol) is a selective extrasynaptic GABAA receptors (eGABARs) agonist (with blood-brain barrier permeability), shows an EC50 value of 13 μM for δ-GABAAR. THIP induces strong tense GABAA-mediated currents in layer 2/3 neurons, but shows on effect on miniature IPSCs. THIP can be used in studies of sleep disorders[1][2][3].
5-Phenyl-1,3-pentadiyne
5-Phenyl-1,3-pentadiyne is found in herbs and spices. 5-Phenyl-1,3-pentadiyne is isolated from roots of Artemisia dracunculus (tarragon). Isolated from roots of Artemisia dracunculus (tarragon). 5-Phenyl-1,3-pentadiyne is found in herbs and spices.
Imidazole propionate
Imidazolepropionic acid, also known as deaminohistidine or 4-imidazolylpropionate, belongs to the class of organic compounds known as imidazolyl carboxylic acids and derivatives. These are organic compounds containing a carboxylic acid chain (of at least 2 carbon atoms) linked to an imidazole ring. Imidazolepropionic acid is a very strong basic compound (based on its pKa). Imidazolepropionic acid is a product of histidine metabolism which may involve oxidation or transamination. This compound is found in the urine of rats loaded with histidine (PMID: 6021220). Isolated from the fungus Coprinus atramentarius (common ink cap) Imidazole-5-propionic acid is a histidine metabolite[1].
1,3-Dimethyluracil
1,3-Dimethyluracil is a methyl derivative of uric acid, found occasionally in human urine. 1,3-Dimethyluracil is one of the purine component in urinary calculi. Methylated purines originate from the metabolism of methylxanthines (caffeine, theophylline and theobromine). Methyluric acids are indistinguishable from uric acid by simple methods routinely used in clinical laboratories, requiring the use of high-performance liquid chromatography (HPLC). Purine derivatives in urinary calculi could be considered markers of abnormal purine metabolism. The content of a purine derivative in stone depends on its average urinary excretion in the general population, similarity to the chemical structure of uric acid, and content of the latter in stone. This suggests that purines in stones represent a solid solution with uric acid as solvent. It is also plausible that methylxanthines, ubiquitous components of the diet and drugs, are involved in the pathogenesis of urolithiasis. (PMID: 11712316, 15833286, 3506820) [HMDB] 1,3-Dimethyluracil is a methyl derivative of uric acid, found occasionally in human urine. 1,3-Dimethyluracil is one of the purine component in urinary calculi. Methylated purines originate from the metabolism of methylxanthines (caffeine, theophylline and theobromine). Methyluric acids are indistinguishable from uric acid by simple methods routinely used in clinical laboratories, requiring the use of high-performance liquid chromatography (HPLC). Purine derivatives in urinary calculi could be considered markers of abnormal purine metabolism. The content of a purine derivative in stone depends on its average urinary excretion in the general population, similarity to the chemical structure of uric acid, and content of the latter in stone. This suggests that purines in stones represent a solid solution with uric acid as solvent. It is also plausible that methylxanthines, ubiquitous components of the diet and drugs, are involved in the pathogenesis of urolithiasis. (PMID:11712316, 15833286, 3506820). 1,3-Dimethyluracil is a pyrimidone derives from a uracil. 1,3-Dimethyluracil found occasionally in human urine. 1,3-Dimethyluracil shows inhibition activity against hCA I and hCA II (human carbonic anhydrase) with Ki of 316.2 μM and 166.4 μM, respectively[1][2].
Pi-Methylimidazoleacetic acid
Although pi-Methylimidazoleacetic acids isomer (1,4-Methylimidazoleacetic acid) is a known metabolite of Histamine, the origin of N pi-methylimidazoleacetic acid is not certain (PMID 7130180). [HMDB] Although pi-Methylimidazoleacetic acids isomer (1,4-Methylimidazoleacetic acid) is a known metabolite of Histamine, the origin of N pi-methylimidazoleacetic acid is not certain (PMID 7130180).
3,4-Diethylthiophene
3,4-Diethylthiophene is found in animal foods. 3,4-Diethylthiophene is a flavour component of various cooked meats. Flavour component of various cooked meats. 3,4-Diethylthiophene is found in animal foods.
(E)-1,3-Undecadiene-5,7,9-triyne|undeca-1,3t-diene-5,7,9-triyne|Undecadien-(1,3t)-triin-(5,7,9)
Undeca-1,9c-dien-3,5,7-triin|undeca-1,9c-diene-3,5,7-triyne
1H-imidazole-1-propanoic acid
An imidazolyl carboxylic acid that is propanoic acid in which one of the methyl hydrogens is substituted by an imidazol-1-yl group. It is a metabolite of histidine found in human urine and faeces.
4-Methoxy-6-methyl-1,3,5-triazin-2-amine
CONFIDENCE standard compound; INTERNAL_ID 2004
2-Methyl-4-amino-6-methoxy-s-triazine
A monoamino-1,3,5-triazine that is 1,3,5-triazin-2-amine substituted by a methoxy group at position 4 and a methyl group at position 6. It is a metabolite of the herbicide thifensulfuron-methyl. CONFIDENCE standard compound; INTERNAL_ID 306; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2618; ORIGINAL_PRECURSOR_SCAN_NO 2617 CONFIDENCE standard compound; INTERNAL_ID 306; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2633; ORIGINAL_PRECURSOR_SCAN_NO 2632 CONFIDENCE standard compound; INTERNAL_ID 306; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2653; ORIGINAL_PRECURSOR_SCAN_NO 2651 CONFIDENCE standard compound; INTERNAL_ID 306; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2626; ORIGINAL_PRECURSOR_SCAN_NO 2625 CONFIDENCE standard compound; INTERNAL_ID 306; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2630; ORIGINAL_PRECURSOR_SCAN_NO 2629 CONFIDENCE standard compound; INTERNAL_ID 2004 CONFIDENCE standard compound; EAWAG_UCHEM_ID 125
1,3-Dimethyluracil
A pyrimidone that is uracil with methyl group substituents at positions 1 and 3. 1,3-Dimethyluracil is a pyrimidone derives from a uracil. 1,3-Dimethyluracil found occasionally in human urine. 1,3-Dimethyluracil shows inhibition activity against hCA I and hCA II (human carbonic anhydrase) with Ki of 316.2 μM and 166.4 μM, respectively[1][2].
1-Methyl-5-imidazoleacetic acid
An imidazolyl carboxylic acid that is acetic acid in which one of the methyl hydrogens is substituted by a 1-methylimidazol-5-yl group.
1H-Imidazole-4-carboxylicacid,2-methylhydrazide(9CI)
1H-Imidazole-2-carboxylicacid,1-methyl-,hydrazide(9CI)
1H-Pyrazole-3-carboxylicacid,4-methyl-,hydrazide(9CI)
1H-Imidazole-1-carboxylicacid,2-methyl-,methylester(9CI)
1H-Imidazole-4-carboximidamide,2,3-dihydro-1-methyl-2-oxo-(9CI)
2(1H)-Pyrimidinone, 4-amino-6-(methylamino)- (7CI)
1H-Imidazole-4-carboxylicacid,5-methyl-,hydrazide(9CI)
1H-Pyrazole-3-carboxylicacid,4-methyl-,methylester(9ci)
1H-Pyrazole-5-carboxylicacid,1-methyl-,hydrazide(9CI)
1H-IMIDAZOLE-5-CARBOXYLIC ACID, 4-METHYL-, METHYL ESTER
1H-Pyrazole-1-carboximidamide,5-hydroxy-3-methyl-(9CI)
1H-Pyrazole-3-carboxylicacid,1-methyl-,hydrazide(9CI)
Pyrrole-3-carboxylic acid, 5-amino-2-methyl- (8CI)
Ethanone, 2-amino-1-(5-amino-1H-imidazol-4-yl)- (9CI)
4-(1H-PYRAZOL-1-YLMETHYL)PIPERIDINE DIHYDROCHLORIDE
gaboxadol
D018377 - Neurotransmitter Agents > D018682 - GABA Agents > D018755 - GABA Agonists D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000927 - Anticonvulsants C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent D002491 - Central Nervous System Agents > D000700 - Analgesics Same as: D04282 THIP (Gaboxadol) is a selective extrasynaptic GABAA receptors (eGABARs) agonist (with blood-brain barrier permeability), shows an EC50 value of 13 μM for δ-GABAAR. THIP induces strong tense GABAA-mediated currents in layer 2/3 neurons, but shows on effect on miniature IPSCs. THIP can be used in studies of sleep disorders[1][2][3].
3-(1H-imidazol-4-yl)propanoic acid
Imidazole-5-propionic acid is a histidine metabolite[1].
3,5-dimethyluracil
A pyrimidone that is uracil with methyl group substituents at positions 3 and 5.
1,5-dimethyluracil
A pyrimidone that is uracil with methyl group substituents at positions 1 and 5.
O(4)-methylthymine
A methylthymine in which the methyl group is located at the O4-position.
1-Methyl-4-imidazoleacetic acid
A monocarboxylic acid that is acetic acid in which one of the methyl hydrogens has been replaced by a 1-methyl-1H-imidazol-4-yl group.