| CAS No. | 71351-79-6 |
| Molecular Formula | C21H25N5O2 |
| Molecular Weight | 379.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-((4-(3-Methoxypyridin-2-yl)butyl)amino)-5-((6-methylpyridin-3-yl)methyl)pyrimidin-4(3H)-one.
2-((4-(3-Methoxypyridin-2-yl)butyl)amino)-5-((6-methylpyridin-3-yl)methyl)pyrimidin-4(3H)-one (CAS 71351-79-6), molecular formula C21H25N5O2 and molecular weight 379.46 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-((4-(3-Methoxypyridin-2-yl)butyl)amino)-5-((6-methylpyridin-3-yl)methyl)pyrimidin-4(3H)-one (C21H25N5O2) is characterized by a steroid core, an amide group, 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).
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.
| Molecular Formula | C21H25N5O2 |
| Molecular Weight | 379.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 5 |