Ethyl 4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate CAS 19282-45-2
| CAS No. | 19282-45-2 |
| Molecular Formula | C11H14O2S |
| Molecular Weight | 210.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate.
Ethyl 4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate (CAS 19282-45-2) is a high-purity analytical reference standard with the molecular formula C11H14O2S and a molecular weight of 210.29 g/mol.
The molecular framework of Ethyl 4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylate (C11H14O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H14O2S |
| Molecular Weight | 210.29 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 5-Ethyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylic acid (CAS 590355-40-1)
- Ethyl 4,5,6,7-tetrahydrobenzo[c]thiophene-1-carboxylate (CAS 96986-78-6)
- 6-Methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carbohydrazide (CAS 956576-52-6)
- N-(4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)propionamide (CAS 27464-71-7)
- 2-(4-Oxo-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)acetic acid (CAS 158094-25-8)
- 2-(6-Ethyl-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)ethan-1-amine (CAS 1016851-02-7)
- 3-(6-Methyl-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)propan-1-amine (CAS 1017250-70-2)
- n-((4,5,6,7-Tetrahydrobenzo[d]thiazol-2-yl)methyl)propan-1-amine (CAS 1249635-58-2)
Recommended Standards
- 4-[(4-methylphenyl)sulfanyl]butanoic acid (CAS 18850-48-1)
- 2-{[4-(propan-2-yl)phenyl]sulfanyl}acetic acid (CAS 1962-66-9)
- 2-(Butylthio)benzoic acid (CAS 17839-61-1)
- (4-Ethynylphenyl)(phenyl)sulfane (CAS 97418-73-0)
- 4-Benzyl-5-(thiophen-3-ylmethyl)-4H-1,2,4-triazole-3-thiol (CAS 451502-05-9)
- [Ethyl-(1-methyl-piperidin-2-ylmethyl)-amino]-acetic acid (CAS 1353944-92-9)
- Torasemide Impurity 53 (CAS 69777-53-3)
- (E)-2-(2-(Dimethylamino)vinyl)-1-methyl-1H-indole-3-carbaldehyde (CAS 815586-75-5)
- 2-(4-Aminotetrahydro-2H-pyran-4-yl)acetic acid (CAS 303037-29-8)
- ethyl 2,2-difluoro-2-(3-iodo-1-bicyclo[1.1.1]pentanyl)acetate (CAS 2242693-90-7)
- Ethyl (1R,3R,4R)-rel-2-Boc-5-oxo-2-azabicyclo[2.2.2]octane-3-carboxylate (CAS 1290627-55-2)
- 4-Methoxy-7-methyl-1H-indole-6-carbonitrile (CAS 1167056-33-8)
- Ethyl 2-[1-(4-methoxybenzenesulfonyl)-3-oxopiperazin-2-yl]acetate (CAS 318469-58-8)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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