Ethyl 7-hydroxybenzo[b]thiophene-5-carboxylate CAS 831222-72-1
| CAS No. | 831222-72-1 |
| Molecular Formula | C11H10O3S |
| Molecular Weight | 222.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 7-hydroxybenzo[b]thiophene-5-carboxylate (C11H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Ethyl 7-hydroxybenzo[b]thiophene-5-carboxylate (CAS 831222-72-1), molecular formula C11H10O3S and molecular weight 222.26 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures Ethyl 7-hydroxybenzo[b]thiophene-5-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 | C11H10O3S |
| Molecular Weight | 222.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 6-hydroxybenzo[b]thiophene-2-carboxylate (CAS 1106537-69-2)
- Ethyl 7-hydroxybenzo[b]thiophene-2-carboxylate (CAS 1956371-74-6)
- Ethyl 6-hydroxybenzo[d]thiazole-2-carboxylate (CAS 59587-30-3)
- Ethyl 2-(5-Hydroxybenzo[d]isoxazol-3-yl)acetate (CAS 34173-05-2)
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Recommended Standards
- Ethyl 5-Fluoro-2,3-dihydroindene-1-acetate (CAS 904290-44-4)
- Isoquinoline Impurity 22 (CAS 91344-81-9)
- Ethyl 5-aminothieno[3,2-b]pyridine-2-carboxylate (CAS 2891458-12-9)
- Methyl 1-(2-fluorophenyl)cyclopentanecarboxylate (CAS 943119-08-2)
- (3-Chloro-5-fluorophenyl)(thiophen-3-yl)methanone (CAS 898771-44-3)
- 1-(5-Bromo-1H-pyrrolo[3,2-b]pyridin-3-yl)ethan-1-one (CAS 1260383-55-8)
- 6-(5-Methyl-2-thienyl)-6,7-dihydro-1,2-benzisoxazol-4(5H)-one (CAS 1428139-94-9)
- 6-((tert-Butoxycarbonyl)amino)-4-methylnicotinic acid (CAS 1823796-48-0)
- (6aS,10R)-2-Chloro-10-methyl-6a,7,9,10-tetrahydro-6H-[1,4]oxazino[4,3-d]pyrimido[5,4-b][1,4]oxazine-4-carboxylic Acid (CAS 2161304-01-2)
- (S)-1-(3,4-difluorophenyl)pentan-1-amine (CAS 1213320-95-6)
- N-(4-cyano-2-nitrophenyl)glycine (CAS 19005-68-6)
- 5-Chloro-1H-pyrazole-3-carbaldehyde (CAS 1367702-84-8)
- 2,3-Dihydroxypiperazine-1,4-dicarbaldehyde (CAS 90084-48-3)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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