Ethyl 2-methyl-4-phenyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-b]pyridine-3-carboxylate CAS 223423-36-7
| CAS No. | 223423-36-7 |
| Molecular Formula | C21H21NO2S |
| Molecular Weight | 351.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Ethyl 2-methyl-4-phenyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-b]pyridine-3-carboxylate (CAS 223423-36-7), a certified reference material (molecular formula C21H21NO2S, MW 351.46 g/mol) for analytical method development and quality control.
Structurally, Ethyl 2-methyl-4-phenyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-b]pyridine-3-carboxylate (C21H21NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 351.46 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C21H21NO2S |
| Molecular Weight | 351.46 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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