Ethyl 2-(2-chlorobenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate CAS 312949-43-2
| CAS No. | 312949-43-2 |
| Molecular Formula | C19H20ClNO3S |
| Molecular Weight | 377.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-(2-chlorobenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate (CAS 312949-43-2), molecular formula C19H20ClNO3S and molecular weight 377.89 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 2-(2-chlorobenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate (C19H20ClNO3S) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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.
CATO manufactures Ethyl 2-(2-chlorobenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[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 | C19H20ClNO3S |
| Molecular Weight | 377.89 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 2-(2-chlorobenzamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 331760-66-8)
- Ethyl 2-(4-chlorobenzamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 299962-45-1)
- (R)-2-(4-Chlorobenzamido)-3-(2-oxo-1,2-dihydroquinolin-4-yl)propanoic acid (CAS 111911-90-1)
- 5-(4-Chlorobenzamido)-4-cyano-N,N-diethyl-3-methylthiophene-2-carboxamide (CAS 419558-74-0)
- 3-(4-Chlorobenzamido)-4-ethoxybenzenesulfonyl chloride (CAS 680618-29-5)
- 5-(4-Chlorobenzamido)-2-ethoxybenzenesulfonyl chloride (CAS 680617-88-3)
- Ethyl 2-(2-chlorobenzamido)-4-phenylthiophene-3-carboxylate (CAS 331760-72-6)
- Ethyl 2-(4-chlorobenzamido)-4-phenylthiophene-3-carboxylate (CAS 77261-20-2)
Recommended Standards
- 4-Chloro-N-(5,6-dimethyl-1-propyl-1H-1,3-benzodiazol-4-yl)benzene-1-sulfonamide (CAS 338423-73-7)
- Methyl 3-amino-4-((4-chlorophenyl)sulfonyl)-5-(methylthio)thiophene-2-carboxylate (CAS 845266-18-4)
- 4-Chloro-N-(1-isopropyl-5,6-dimethyl-1H-benzo[d]imidazol-4-yl)benzenesulfonamide (CAS 338423-28-2)
- N-([1,1'-Biphenyl]-2-yl)-3-chloro-6-methylbenzo[b]thiophene-2-carboxamide (CAS 332381-25-6)
- 1,3-Dimethyl-2-(3,7-dimethyloctyl)cyclohexane (CAS 19550-61-9)
- 6-(Pyrrolidin-2-yl)nicotinic acid (CAS 1270356-08-5)
- (E,E)-Methyl Farnesoate (CAS 10485-70-8)
- Tert-butyl (2-(3-aminophenoxy)ethyl)carbamate (CAS 246240-10-8)
- 3-Chloro-5-(trifluoromethoxy)phenol (CAS 1017778-52-7)
- (3,4-Dimethylphenyl)(4-(6-propoxypyridazin-3-yl)piperazin-1-yl)methanone (CAS 946283-54-1)
- N-(3-Bromobenzyl)-2-chloro-N-cyclopropylacetamide (CAS 1176625-60-7)
- Melatonin Impurity 27 (CAS 188397-02-6)
- rac-Isodiospyrin (CAS 89475-33-2)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
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