Methyl 6-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-2-(2-chlorobenzamido)-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylate CAS 321430-38-0
| CAS No. | 321430-38-0 |
| Molecular Formula | C22H16Cl2F3N3O3S |
| Molecular Weight | 530.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 6-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-2-(2-chlorobenzamido)-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylate (CAS 321430-38-0), molecular formula C22H16Cl2F3N3O3S and molecular weight 530.35 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Methyl 6-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-2-(2-chlorobenzamido)-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylate (C22H16Cl2F3N3O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 530.35 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C22H16Cl2F3N3O3S |
| Molecular Weight | 530.35 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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