6-methoxy-1-benzothiophene-3-carboxylic acid CAS 43121-88-6
| CAS No. | 43121-88-6 |
| Molecular Formula | C10H8O3S |
| Molecular Weight | 208.23 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 6-methoxy-1-benzothiophene-3-carboxylic acid.
6-methoxy-1-benzothiophene-3-carboxylic acid (CAS 43121-88-6), molecular formula C10H8O3S and molecular weight 208.23 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 6-methoxy-1-benzothiophene-3-carboxylic acid (C10H8O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 208.23 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 6-methoxy-1-benzothiophene-3-carboxylic acid 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 | C10H8O3S |
| Molecular Weight | 208.23 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.) | 1969 |
| Sulfur Atoms | 1 |
Related methoxy Standards
- 4-Methoxy-1-benzothiophene-7-carboxylic acid (CAS 1555966-29-4)
- 5-Methoxy-3-(methyl-d3)-indole-2-carboxylic Acid (CAS 1794752-91-2)
- 7-Methoxy-1-benzothiophene-2-carboxylic acid (CAS 88791-07-5)
- N-Methoxy-1-(methylsulfonyl)azetidine-3-carboxamide (CAS 1448036-30-3)
- 8-Methoxy-3,4-dihydro-2H-1-benzopyran-3-carboxylic acid (CAS 108088-19-3)
- 6-Methoxy-7-nitro-1,2,3,4-tetrahydroisoquinoline (CAS 1116231-01-6)
- 3-(4-Methoxy-3-methylphenyl)-2-oxopropanoic acid (CAS 1247813-31-5)
- 4-(1-Methoxy-1-oxopropan-2-yl)benzoic acid (CAS 1255042-09-1)
Recommended Standards
- 6-Fluoro-1h-spiro[furo[3,4-c]pyridine-3,4'-piperidine] (CAS 741683-18-1)
- 6-Amino-7-fluoro-3,3-dimethyl-3,4-dihydroquinolin-2(1H)-one (CAS 2672571-35-4)
- Ethyl (1R,2R)-2-(2-fluorophenyl)cyclopropane-1-carboxylate (CAS 928054-48-2)
- 5-Methoxybenzothiophene-2-carboxylic Acid (CAS 23046-02-8)
- 4-Chloro-1-(3-methylpyridin-4-yl)-1h-pyrazolo[3,4-d]pyrimidine (CAS 1207827-22-2)
- 5-(1-Isobutylpyrrolidin-2-yl)-N,N-dimethylpyridin-2-amine (CAS 1352491-05-4)
- 3-Hydroxybenzo[c]phenanthrene (CAS 22717-95-9)
- 4-(cyclopropylmethoxy)-3-hydroxybenzoic acid (CAS 1243391-01-6)
- Ethylene Glycol Bis(propionitrile) Ether (CAS 3386-87-6)
- (R)-2-(4-Chlorophenyl)propanoic acid (CAS 105879-62-7)
- 2-(Pyridin-2-yl)-N-(thiophen-3-ylmethyl)ethan-1-amine (CAS 1019617-19-6)
- 5-Bromo-6-methoxy-1,3-dihydropyrrolo[2,3-b]pyridin-2-one (CAS 1190316-90-5)
- 2-Propylbenzimidazole (CAS 5465-29-2)
- Xenopsin-Related Peptide 2 (XP-2) (H-9340.0005) (CAS 117442-29-2)
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