Ethyl 2-(4-chlorobenzamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 299962-45-1
| CAS No. | 299962-45-1 |
| Molecular Formula | C18H16ClNO4S |
| Molecular Weight | 377.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl 2-(4-chlorobenzamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (C18H16ClNO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 377.84 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Ethyl 2-(4-chlorobenzamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 299962-45-1), a certified reference material (molecular formula C18H16ClNO4S, MW 377.84 g/mol) for analytical method development and quality control.
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 | C18H16ClNO4S |
| Molecular Weight | 377.84 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 11.0 |
| 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-(2-chlorobenzamido)-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylate (CAS 312949-43-2)
- (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
- N-(3-Chloro-4-methoxybenzyl)-4-(4-fluorophenyl)tetrahydro-1(2H)-pyrazinecarboxamide (CAS 866137-32-8)
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- 416901-58-1 COX-2 Inhibitor I (CAS 416901-58-1)
- (2E)-3-{4-[(2-chloro-6-fluorophenyl)methoxy]phenyl}-N-(3-methoxypropyl)prop-2-enamide (CAS 477870-66-9)
- 1-{4,10-dioxatricyclo[7.3.0.0³,⁷]dodeca-1,3(7),5,8,11-pentaen-2-yl}ethan-1-one (CAS 1892475-10-3)
- 2,3-Dibromo-1-chloro-5-fluoro-4-methylbenzene (CAS 1365969-01-2)
- 1-(4-Hydroxypiperidin-1-yl)-2-methoxyethan-1-one (CAS 1247397-72-3)
- Flumazenil Impurity 18 (CAS CATO-C4X-143218)
- 5-(4-Fluoro-2-methylphenyl)furan-2-carboxylic acid (CAS 1094267-55-6)
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- 1,3,5-Pentanetriol (CAS 4328-94-3)
- 2,2-Dimethyl-8-phenoxy-4-(1H-1,2,4-triazol-1-yl)octan-3-one (CAS 80553-71-5)
- 5-Cyclobutoxypyridazin-3(2H)-one (CAS 1346697-82-2)
- Tirzepatide Impurity 22 X TFA Salt (CAS CATO-C4X-324022)
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