Ethyl 2-cinnamamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 76981-77-6
| CAS No. | 76981-77-6 |
| Molecular Formula | C20H21NO3S |
| Molecular Weight | 355.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 2-cinnamamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 76981-77-6), molecular formula C20H21NO3S and molecular weight 355.45 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H21NO3S, Ethyl 2-cinnamamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 355.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Ethyl 2-cinnamamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 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 | C20H21NO3S |
| Molecular Weight | 355.45 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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