Methyl 3-chlorobenzo[b]thiophene-2-carboxylate CAS 21211-07-4
| CAS No. | 21211-07-4 |
| Molecular Formula | C10H7ClO2S |
| Molecular Weight | 226.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 226.68 g/mol gives Methyl 3-chlorobenzo[b]thiophene-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Methyl 3-chlorobenzo[b]thiophene-2-carboxylate (CAS 21211-07-4), a certified reference material (molecular formula C10H7ClO2S, MW 226.68 g/mol) for analytical method development and quality control.
Structurally, Methyl 3-chlorobenzo[b]thiophene-2-carboxylate (C10H7ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 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 226.68 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Methyl 3-chlorobenzo[b]thiophene-2-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 | C10H7ClO2S |
| Molecular Weight | 226.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-(5-Chlorobenzo[b]thiophen-3-yl)acetic Acid (CAS 17266-30-7)
- 2-(2-Chlorobenzo[b]thiophen-3-yl)acetic acid (CAS 174454-42-3)
- 4-Chlorobenzo[b]thiophene-2-carbohydrazide (CAS 952182-46-6)
- 5-Chlorobenzo[b]thiophene-2-carbohydrazide (CAS 87999-20-0)
- 6-Chlorobenzo[b]thiophene-2-carbohydrazide (CAS 87999-22-2)
- Methyl 7-chlorobenzo[b]thiophene-2-carboxylate (CAS 550998-56-6)
- N-(2-Chlorobenzo[d]thiazol-5-yl)acetamide (CAS 38519-31-2)
- Methyl4-chlorobenzo[b]thiophene-2-carboxylate (CAS 35212-95-4)
Recommended Standards
- Isopropyl (5-chloro-2-methylphenyl)carbamate (CAS 2621-68-3)
- methyl 5-chloro-1-benzothiophene-2-carboxylate (CAS 35212-96-5)
- 7-Chloro-3-methylbenzo[b]thiophene-2-carboxylic acid (CAS 752135-41-4)
- 6-Chloro-3-methylbenzo[b]thiophene-2-carboxylic acid (CAS 66490-32-2)
- 5-(2,4-Dichlorophenyl)-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 162693-41-6)
- Methyl 4-acetamidopyridine-2-carboxylate (CAS 1820716-80-0)
- Methyl 2-methyl-2,3-dihydro-1-benzofuran-5-carboxylate (CAS 53596-64-8)
- β-Naphthylthiourea (CAS 3394-04-5)
- 3-(Piperazin-1-yl)-N,N-dipropylpropan-1-amine (CAS 827614-51-7)
- 2-Formyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (CAS 61047-23-2)
- (4-Oxo-4-phenylbutyl)triphenylphosphonium bromide (CAS 89490-63-1)
- 4-(3-Amino-4-methylphenyl)-2-methylpyridazin-3(2H)-one (CAS 1263474-51-6)
- Potassium cyclobutylmethyltrifluoroborate (CAS 2135480-21-4)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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