7-Hydroxybenzo[b]thiophene-2-carboxylic acid CAS 88791-09-7
| CAS No. | 88791-09-7 |
| Molecular Formula | C9H6O3S |
| Molecular Weight | 194.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H6O3S, 7-Hydroxybenzo[b]thiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 194.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
7-Hydroxybenzo[b]thiophene-2-carboxylic acid (CAS 88791-09-7), molecular formula C9H6O3S and molecular weight 194.21 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 7-Hydroxybenzo[b]thiophene-2-carboxylic acid 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 | C9H6O3S |
| Molecular Weight | 194.21 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.) | 1982 |
| Sulfur Atoms | 1 |
Related Hydroxybenzo Standards
- 7-Hydroxybenzo[b]thiophene-6-carboxylic acid (CAS 1000774-33-3)
- 1-(5-Hydroxybenzo[c][1,2,5]thiadiazol-4-yl)ethanone (CAS 120893-39-2)
- 7-Hydroxybenzo[b]thiophene-5-carboxylic acid (CAS 1221448-81-2)
- 6-HYDROXYBENZO[B]THIOPHENE-2-CARBOXYLIC ACID (CAS 1432040-88-4)
- 5-Hydroxybenzo[b]thiophene-3-carboxylic acid (CAS 16304-39-5)
- 3-Hydroxybenzo[b]thiophene-2-carboxylic acid (CAS 191031-07-9)
- 4-Hydroxybenzo[b]thiophene-5-carboxylic acid (CAS 197014-73-6)
- 5-Hydroxybenzo[b]thiophene-2-carboxylic acid (CAS 95094-87-4)
Recommended Standards
- 7-Fluoro-4,4-dimethyl-1,2,3,4-tetrahydro-1,8-naphthyridin-2-one (CAS 846035-55-0)
- 7-Nitrobenzo[b]thiophen-3-amine (CAS 348617-91-4)
- 7-(Methylthio)pyrimido[4,5-d]pyrimidin-4(3H)-one (CAS 91996-86-0)
- Acibenzolar Acid Impurity 6 (CAS 23621-08-1)
- Bis(2,4,4-trimethylpentyl)phosphinic Acid (CAS 83411-71-6)
- 3-Methyl-1H-thieno[2,3-c]pyrazole-5-carboxylic acid (CAS 873072-60-7)
- 6-Bromo-4-(difluoromethyl)-5-methoxynicotinic acid (CAS 1805351-77-2)
- 2-(tert-Butyl)-3-methylimidazolidin-4-one (CAS 101055-55-4)
- tert-Butyl 5-chloro-2-(chloromethyl)-1H-benzo[d]imidazole-1-carboxylate (CAS 251937-22-1)
- 3-(2-Ethyl-1H-benzo[d]imidazol-1-yl)propanoic acid hydrochloride (CAS 1052528-77-4)
- 1-(2-Bromophenyl)-2-methylpropan-2-amine (CAS 103275-22-5)
- (E)-3-(4-(tert-butyl)phenyl)-N-(2,4-difluorophenyl)acrylamide (CAS 298215-24-4)
- 1-(Chrysen-6-yl)ethanone (CAS 33942-77-7)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
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