6-Amino-2-(methylthio)pyrimidin-4(3H)-one hydrate CAS 220458-89-9
| CAS No. | 220458-89-9 |
| Molecular Formula | C5H7N3OS |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
6-Amino-2-(methylthio)pyrimidin-4(3H)-one hydrate (CAS 220458-89-9), molecular formula C5H7N3OSH2O and molecular weight 175.21 g/mol, is a CATO reference standard with documented purity and traceability.
6-Amino-2-(methylthio)pyrimidin-4(3H)-one hydrate (C5H7N3OSH2O) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H7N3OS H2O |
| Molecular Weight | 175.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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