Record Information |
---|
Version | 2.0 |
---|
Creation Date | 2014-08-29 06:28:37 UTC |
---|
Update Date | 2018-03-21 17:46:23 UTC |
---|
Accession Number | T3D4332 |
---|
Identification |
---|
Common Name | Dihydrothymine |
---|
Class | Small Molecule |
---|
Description | Dihydrothymine is an intermediate breakdown product of thymine. Dihydropyrimidine dehydrogenase catalyzes the reduction of thymine into 5,6-dihydrothymine then dihydropyrimidinase hydrolyzes 5,6-dihydrothymine into N-carbamyl-beta-alanine. Finally, beta-ureidopropionase catalyzes the conversion of N-carbamyl-beta-alanine to beta-alanine. When present at abnormally high levels, dihydrothymine can be toxic, although the mechanism of toxicity is not clear. In particular, patients with dihydropyrimidinase deficiency exhibit highly increased concentrations of 5,6-dihydrouracil and 5,6-dihydrothymine, and moderately increased concentrations of uracil and thymine can be detected in urine. Dihydropyrimidinase deficiency is a disorder that can cause neurological and gastrointestinal problems in some affected individuals. The most common neurological abnormalities that occur are intellectual disability, seizures, weak muscle tone (hypotonia), abnormally small head size (microcephaly), and autistic behaviours that affect communication and social interaction. Gastrointestinal problems that occur in dihydropyrimidinase deficiency include backflow of acidic stomach contents into the esophagus (gastroesophageal reflux) and recurrent episodes of vomiting. |
---|
Compound Type | - Animal Toxin
- Food Toxin
- Metabolite
- Natural Compound
- Organic Compound
|
---|
Chemical Structure | |
---|
Synonyms | Synonym | 5,6-Dihydro-5-methyluracil | 5,6-Dihydrothymine | 5-Methyl-5,6-dihydrouracil | 5-Methyl-Hydrouracil | 5-Methyldihydropyrimidine-2,4(1H,3H)-dione | Dihydro-5-methyl-2,4(1H,3H)-Pyrimidinedione |
|
---|
Chemical Formula | C5H8N2O2 |
---|
Average Molecular Mass | 128.129 g/mol |
---|
Monoisotopic Mass | 128.059 g/mol |
---|
CAS Registry Number | 696-04-8 |
---|
IUPAC Name | 5-methyl-1,3-diazinane-2,4-dione |
---|
Traditional Name | dihydrothymine |
---|
SMILES | CC1CN=C(O)N=C1O |
---|
InChI Identifier | InChI=1/C5H8N2O2/c1-3-2-6-5(9)7-4(3)8/h3H,2H2,1H3,(H2,6,7,8,9) |
---|
InChI Key | InChIKey=NBAKTGXDIBVZOO-UHFFFAOYNA-N |
---|
Chemical Taxonomy |
---|
Description | belongs to the class of organic compounds known as hydropyrimidines. Hydropyrimidines are compounds containing a hydrogenated pyrimidine ring (i.e. containing less than the maximum number of double bonds.). |
---|
Kingdom | Organic compounds |
---|
Super Class | Organoheterocyclic compounds |
---|
Class | Diazines |
---|
Sub Class | Pyrimidines and pyrimidine derivatives |
---|
Direct Parent | Hydropyrimidines |
---|
Alternative Parents | |
---|
Substituents | - 5,6-dihydropyrimidine
- Hydropyrimidine
- Azacycle
- Organic 1,3-dipolar compound
- Propargyl-type 1,3-dipolar organic compound
- Organic nitrogen compound
- Organic oxygen compound
- Organopnictogen compound
- Hydrocarbon derivative
- Organooxygen compound
- Organonitrogen compound
- Aliphatic heteromonocyclic compound
|
---|
Molecular Framework | Aliphatic heteromonocyclic compounds |
---|
External Descriptors | |
---|
Biological Properties |
---|
Status | Detected and Not Quantified |
---|
Origin | Endogenous |
---|
Cellular Locations | |
---|
Biofluid Locations | Not Available |
---|
Tissue Locations | |
---|
Pathways | |
---|
Applications | Not Available |
---|
Biological Roles | |
---|
Chemical Roles | Not Available |
---|
Physical Properties |
---|
State | Solid |
---|
Appearance | White powder. |
---|
Experimental Properties | Property | Value |
---|
Melting Point | Not Available | Boiling Point | Not Available | Solubility | Not Available | LogP | Not Available |
|
---|
Predicted Properties | |
---|
Spectra |
---|
Spectra | Spectrum Type | Description | Splash Key | Deposition Date | View |
---|
GC-MS | GC-MS Spectrum - GC-MS (1 TMS) | splash10-000i-5900000000-0b84b9786838d29e07ab | 2014-06-16 | View Spectrum | GC-MS | GC-MS Spectrum - GC-MS (2 TMS) | splash10-0zmi-8980000000-d75d30c6e5fdb4643aa5 | 2014-06-16 | View Spectrum | GC-MS | GC-MS Spectrum - GC-MS (Non-derivatized) | splash10-000i-5900000000-0b84b9786838d29e07ab | 2017-09-12 | View Spectrum | GC-MS | GC-MS Spectrum - GC-MS (Non-derivatized) | splash10-0zmi-8980000000-d75d30c6e5fdb4643aa5 | 2017-09-12 | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive | splash10-004i-9300000000-05ab95b9effabc03847d | 2017-09-01 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated) | splash10-004i-8900000000-db662635cbae4d48204b | 2012-07-24 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated) | splash10-0006-9000000000-c3960ffe99d74c617000 | 2012-07-24 | View Spectrum | LC-MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated) | splash10-0006-9000000000-9a6c2715f931ff084157 | 2012-07-24 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Positive | splash10-004i-0900000000-b0b2721bf2e4a74bbba2 | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Positive | splash10-0a4l-9100000000-b89dfebf5db699f3651c | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Positive | splash10-052f-9000000000-97f152f0bbe6fb600c5c | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Negative | splash10-004i-3900000000-98c26fdc1559c4c1afc2 | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Negative | splash10-0006-9000000000-320f4c88705757a63b75 | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Negative | splash10-0006-9000000000-76fbb95e0354defdb94e | 2017-09-01 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Positive | splash10-004i-0900000000-7c6c3743140aa087d39c | 2021-10-21 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Positive | splash10-004i-4900000000-70eb9f3b90f3b230f593 | 2021-10-21 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Positive | splash10-0a4l-9000000000-e84dd91c5dd8c38010f7 | 2021-10-21 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 10V, Negative | splash10-004i-3900000000-b1b06bf61dca14c34015 | 2021-10-21 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 20V, Negative | splash10-0006-9200000000-a8831b6e3dbc59c56963 | 2021-10-21 | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 40V, Negative | splash10-0006-9000000000-90726b17dc36e29c5299 | 2021-10-21 | View Spectrum | MS | Mass Spectrum (Electron Ionization) | splash10-004l-9200000000-873ae62dcdf602237ec1 | 2014-09-20 | View Spectrum | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, experimental) | Not Available | 2012-12-04 | View Spectrum | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, DMSO-d6, experimental) | Not Available | 2014-09-20 | View Spectrum | 1D NMR | 13C NMR Spectrum (1D, 15.09 MHz, DMSO-d6, experimental) | Not Available | 2014-09-23 | View Spectrum | 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | Not Available | 2012-12-04 | View Spectrum |
|
---|
Toxicity Profile |
---|
Route of Exposure | Not Available |
---|
Mechanism of Toxicity | Dihydropyrimidine dehydrogenase catalyzes the reduction of thymine to 5, 6-dihydrothymine then dihydropyrimidinase hydrolyzes 5, 6-dihydrothymine to N-carbamyl-b-alanine. Finally, beta-ureidopropionase catalyzes the conversion of N-carbamyl-b-alanine to beta-alanine. Accumulation of dihydrothymine in the body has been shown to be toxic. |
---|
Metabolism | Not Available |
---|
Toxicity Values | Not Available |
---|
Lethal Dose | Not Available |
---|
Carcinogenicity (IARC Classification) | No indication of carcinogenicity to humans (not listed by IARC). |
---|
Uses/Sources | This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation. |
---|
Minimum Risk Level | Not Available |
---|
Health Effects | Not Available |
---|
Symptoms | Not Available |
---|
Treatment | Not Available |
---|
Normal Concentrations |
---|
| Not Available |
---|
Abnormal Concentrations |
---|
| Not Available |
---|
External Links |
---|
DrugBank ID | Not Available |
---|
HMDB ID | HMDB00079 |
---|
PubChem Compound ID | 93556 |
---|
ChEMBL ID | Not Available |
---|
ChemSpider ID | 84456 |
---|
KEGG ID | C00906 |
---|
UniProt ID | Not Available |
---|
OMIM ID | |
---|
ChEBI ID | 27468 |
---|
BioCyc ID | DIHYDRO-THYMINE |
---|
CTD ID | Not Available |
---|
Stitch ID | Not Available |
---|
PDB ID | Not Available |
---|
ACToR ID | Not Available |
---|
Wikipedia Link | Not Available |
---|
References |
---|
Synthesis Reference | Yamane, Tetsuo; Wyluda, Benjamin J.; Shulman, Robert G. Dihydrothymine from ultraviolet-irradiated DNA. Proceedings of the National Academy of Sciences of the United States of America (1967), 58(2), 439-42. |
---|
MSDS | Link |
---|
General References | - Assmann B, Hoffmann GF, Wagner L, Brautigam C, Seyberth HW, Duran M, Van Kuilenburg AB, Wevers R, Van Gennip AH: Dihydropyrimidinase deficiency and congenital microvillous atrophy: coincidence or genetic relation? J Inherit Metab Dis. 1997 Sep;20(5):681-8. [9323563 ]
- van Lenthe H, van Kuilenburg AB, Ito T, Bootsma AH, van Cruchten A, Wada Y, van Gennip AH: Defects in pyrimidine degradation identified by HPLC-electrospray tandem mass spectrometry of urine specimens or urine-soaked filter paper strips. Clin Chem. 2000 Dec;46(12):1916-22. [11106323 ]
- Hofmann U, Schwab M, Seefried S, Marx C, Zanger UM, Eichelbaum M, Murdter TE: Sensitive method for the quantification of urinary pyrimidine metabolites in healthy adults by gas chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Jul 5;791(1-2):371-80. [12798197 ]
- Rosenbaum K, Jahnke K, Curti B, Hagen WR, Schnackerz KD, Vanoni MA: Porcine recombinant dihydropyrimidine dehydrogenase: comparison of the spectroscopic and catalytic properties of the wild-type and C671A mutant enzymes. Biochemistry. 1998 Dec 15;37(50):17598-609. [9860876 ]
- Sumi S, Kidouchi K, Kondou M, Hayashi K, Dobashi K, Kouwaki M, Togari H, Wada Y: Possible prediction of adverse reactions to fluorouracil by the measurement of urinary dihydrothymine and thymine. Int J Mol Med. 1998 Oct;2(4):477-82. [9857238 ]
- Van Kuilenburg AB, Van Lenthe H, Van Gennip AH: Identification and tissue-specific expression of a NADH-dependent activity of dihydropyrimidine dehydrogenase in man. Anticancer Res. 1996 Jan-Feb;16(1):389-94. [8615641 ]
- Kobayashi K, Sumi S, Kidouchi K, Mizuno I, Mohri N, Fukui T, Akamo Y, Takeyama H, Manabe T: [A case of gastric cancer with decreased dihydropyrimidine dehydrogenase activity]. Gan To Kagaku Ryoho. 1998 Jul;25(8):1217-9. [9679586 ]
- Sumi S, Imaeda M, Kidouchi K, Ohba S, Hamajima N, Kodama K, Togari H, Wada Y: Population and family studies of dihydropyrimidinuria: prevalence, inheritance mode, and risk of fluorouracil toxicity. Am J Med Genet. 1998 Jul 24;78(4):336-40. [9714435 ]
- Sreekumar A, Poisson LM, Rajendiran TM, Khan AP, Cao Q, Yu J, Laxman B, Mehra R, Lonigro RJ, Li Y, Nyati MK, Ahsan A, Kalyana-Sundaram S, Han B, Cao X, Byun J, Omenn GS, Ghosh D, Pennathur S, Alexander DC, Berger A, Shuster JR, Wei JT, Varambally S, Beecher C, Chinnaiyan AM: Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression. Nature. 2009 Feb 12;457(7231):910-4. doi: 10.1038/nature07762. [19212411 ]
|
---|
Gene Regulation |
---|
Up-Regulated Genes | Not Available |
---|
Down-Regulated Genes | Not Available |
---|