3-Amino-6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one CAS 35523-72-9
| CAS No. | 35523-72-9 |
| Molecular Formula | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Amino-6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (C5H7N3OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 3-Amino-6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 35523-72-9), a certified reference material (molecular formula C5H7N3OS, MW 157.19 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H7N3OS |
| Molecular Weight | 157.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Ethyl 3-acetamido-5-chloro-2-hydroxybenzoate (CAS 139329-90-1)
- (3S,4AR,6R,8aR)-6-(2-(1H-tetrazol-5-yl)ethyl)decahydroisoquinoline-3-carboxylic acid (CAS 150131-78-5)
- 3-(5,6,7,8-Tetrahydroimidazo[1,2-a]pyridin-3-yl)aniline (CAS 1352490-43-7)
- Venetoclax Impurity 72 (CAS 2007920-25-2)
- Dapagliflozin Impurity 92 (CAS CATO-C4X-113892)
- 2-(3-{2-[(4-fluorophenyl)methoxy]phenyl}-1H-pyrazol-1-yl)ethan-1-ol (CAS 955976-71-3)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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