Ethyl 2-(3-chlorobenzo[b]thiophene-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 313960-53-1
| CAS No. | 313960-53-1 |
| Molecular Formula | C20H18ClNO3S2 |
| Molecular Weight | 419.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 2-(3-chlorobenzo[b]thiophene-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Ethyl 2-(3-chlorobenzo[b]thiophene-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 313960-53-1), a certified reference material (molecular formula C20H18ClNO3S2, MW 419.94 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Ethyl 2-(3-chlorobenzo[b]thiophene-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 419.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C20H18ClNO3S2 |
| Molecular Weight | 419.94 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Ethyl Standards
- 3-(6-Chlorobenzo[d]thiazol-2-yl)-1-(2,4-dichlorobenzyl)pyridin-2(1H)-one (CAS 400075-86-7)
- N-(5-(5-chlorobenzo[d]oxazol-2-yl)-2-methylphenyl)-3-methyl-4-nitrobenzamide (CAS 400740-94-5)
- N-(5-Chlorobenzo[d][1,3]dioxol-4-yl)-7-fluoro-5-((tetrahydro-2H-pyran-4-yl)oxy)quinazolin-4-amine (CAS 379230-38-3)
- (((5-Chlorobenzo[d]thiazol-2-yl)sulfinyl)methyl)diphenylphosphine oxide (CAS 1956340-17-2)
- N-(5-(5-Chlorobenzo[d]oxazol-2-yl)-2-methylphenyl)-3-nitrobenzamide (CAS 313953-44-5)
- N-(3-(6-Chlorobenzo[d]oxazol-2-yl)-5-methylphenyl)-4-ethoxybenzamide (CAS 590396-53-5)
- 3-(5-Chlorobenzo[d]oxazol-2-yl)-N-(3-(trifluoromethyl)benzyl)pyridin-2-amine (CAS 339102-07-7)
- 3-(5-Chlorobenzo[d]oxazol-2-yl)-7-(diethylamino)-2-oxo-2H-chromene-4-carbonitrile (CAS 70546-12-2)
Recommended Standards
- 3,5-Diiodo-4-hydroxymandelic Acid (CAS 2932-76-5)
- Hydroxychloroquine Impurity 30 (CAS CATO-C4X-183530)
- 2-(4-Chlorobenzenesulfinyl)-4,6-dimethyl-3-(4-methylbenzenesulfonyl)pyridine (CAS 477762-79-1)
- 2-(4-(5-Chloro-2-methylphenyl)piperazin-1-yl)-N,N-diphenylacetamide (CAS 1023798-42-6)
- 2-Methyl-4-sulfamoylphenylboronic acid (CAS 1402238-36-1)
- Ruthenium, [(3S)-4,4'-bis(diphenylphosphino-κP)-2,2',6,6'-tetramethoxy-3,3'-bipyridine]dichloro[(1R,2R)-1,2-diphenyl-1,2-ethanediamine-κN1,κN2] (CAS 916826-86-3)
- 2,3-Dichloro-6-(trifluoromethyl)benzenesulfonyl chloride (CAS 1706446-71-0)
- 4,6-Diphenylpicolinic acid (CAS 19625-63-9)
- 4-Mercaptonicotinic acid (CAS 18103-73-6)
- 5-Bromo-2-chloropyridine-3-sulfonyl chloride (CAS 1146290-19-8)
- 3,3-Difluorobutane-1-sulfonyl chloride (CAS 1785613-55-9)
- 1,3-Dibromo-2-(trifluoromethyl)benzene (CAS 1214340-55-2)
- (2-Methylthiazol-4-yl)methanethiol (CAS 91615-65-5)
- Semaglutide impurity 46 (CAS CATO-C4X-222646)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com