4-Amino-2-(methylthio)pyrimidine-5-carboxylic Acid CAS 771-81-3
| CAS No. | 771-81-3 |
| Molecular Formula | C6H7N3O2S |
| Molecular Weight | 185.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Amino-2-(methylthio)pyrimidine-5-carboxylic Acid.
4-Amino-2-(methylthio)pyrimidine-5-carboxylic Acid (CAS 771-81-3), molecular formula C6H7N3O2S and molecular weight 185.20 g/mol, is a CATO reference standard with documented purity and traceability.
4-Amino-2-(methylthio)pyrimidine-5-carboxylic Acid (C6H7N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-Amino-2-(methylthio)pyrimidine-5-carboxylic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H7N3O2S |
| Molecular Weight | 185.20 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Amino Standards
- 5-Amino-2-(methylthio)pyrimidine-4-carboxylic Acid (CAS 100130-05-0)
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