Ethyl 2-(2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 333778-29-3
| CAS No. | 333778-29-3 |
| Molecular Formula | C21H23N3O3S2 |
| Molecular Weight | 429.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 2-(2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Ethyl 2-(2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 333778-29-3), a certified reference material (molecular formula C21H23N3O3S2, MW 429.56 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, Ethyl 2-(2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetamido)-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 429.56 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Ethyl 2-(2-((3-cyano-4,6-dimethylpyridin-2-yl)thio)acetamido)-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.
Physical & Chemical Properties
| Molecular Formula | C21H23N3O3S2 |
| Molecular Weight | 429.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Ethyl Standards
- 2-[(4-Cyano-5-methyl-1,2-thiazol-3-yl)sulfanyl]-N'-{2-[3-(trifluoromethyl)phenoxy]ethanimidoyl}acetohydrazide (CAS 338418-56-7)
- Ethyl 5-cyano-6-[(2,4-dichlorophenyl)sulfanyl]-2-phenylpyridine-3-carboxylate (CAS 860784-73-2)
- 2-[(4-Cyano-5-methyl-1,2-thiazol-3-yl)sulfanyl]-N'-[2-(2,4-dichlorophenoxy)ethanimidoyl]acetohydrazide (CAS 338395-70-3)
- 4-Cyano-1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl 3-(2-chloro-6-fluorophenyl)-5-methylisoxazole-4-carboxylate (CAS 956825-58-4)
- 2-((3-Cyano-4-(trifluoromethyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-2-yl)thio)-N-(3-cyanophenyl)acetamide (CAS 626228-76-0)
- N-(4-Cyano[1,1-biphenyl]-4-yl)-N-[4-(3H-imidazo[4,5-β]pyridin-7-yl)phenyl] Urea (CAS 1361414-26-7)
- Ethyl 5-cyano-6-[4-(2-fluorophenyl)piperazin-1-yl]-2-phenylpyridine-3-carboxylate (CAS 477866-17-4)
- Ethyl 5-cyano-2-phenyl-6-{[3-(trifluoromethyl)phenyl]sulfanyl}pyridine-3-carboxylate (CAS 306980-03-0)
Recommended Standards
- Bis[2-(di-i-propylphosphino)-4-methylphenyl]amine (CAS 666856-94-6)
- Abrocitinib Impurity 34 (CAS CATO-C4X-288434)
- 6-(Tert-butylsulfonyl)-2-(3-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-2-yl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 861212-81-9)
- Abrocitinib Impurity 35 (CAS CATO-C4X-288435)
- 2-(((tert-Butoxycarbonyl)amino)methyl)-3-hydroxy-3-methylbutanoic acid (CAS 1233513-26-2)
- 4-ethyl-4H,5H,6H,7H-[1,2,5]selenadiazolo[3,4-d]pyrimidine-5,7-dione (CAS 2934736-74-8)
- 5-Bromo-N-(1,3,4-thiadiazol-2-yl)thiophene-2-carboxamide (CAS 942690-10-0)
- Apixaban Impurity 6 (CAS 1074365-84-6)
- 1-Bromo-2-(2-chloroethyl)benzene (CAS 75534-18-8)
- (E)-2-((4-Fluorophenyl)diazenyl)naphthalen-1-ol (CAS 125910-80-7)
- 6-Bromo-7-methoxyquinazoline-2,4(1H,3H)-dione (CAS 1631034-79-1)
- N-(2-((4-chlorophenyl)thio)-5-cyanophenyl)-3-methoxybenzamide (CAS 303147-32-2)
- 1,7-dimethyl-1H-indole-3-carboxylic acid (CAS 125818-11-3)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
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