| CAS No. | 496801-98-0 |
| Molecular Formula | C21H18N4OS |
| Molecular Weight | 374.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
3-Amino-N-[(4-methylphenyl)methyl]-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide (CAS 496801-98-0), molecular formula C21H18N4OS and molecular weight 374.46 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H18N4OS, 3-Amino-N-[(4-methylphenyl)methyl]-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 374.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H18N4OS |
| Molecular Weight | 374.46 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |