3-Chlorobenzo[b]thiophene-2-carboxylic acid 3-chlorobenzo(b)thiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene carboxylic acid 3-chloro-2-benzo[b]thiophene carboxylic acid 3-chloro-benzo[b]thio-phene-2-carboxylic acid 3-chlorobenzo [b]thiophene-2-carboxylic acid 3-chloro-1-benzothiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene-2-carboxylic acid 3-Chlorobenzothiophene-2-carboxylic acid 21211-22-3 CAS 21211-22-3
| CAS No. | 21211-22-3 |
| Molecular Formula | C9H13ClO2S |
| Molecular Weight | 220.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 220.72 g/mol gives 3-Chlorobenzo[b]thiophene-2-carboxylic acid 3-chlorobenzo(b)thiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene carboxylic acid 3-chloro-2-benzo[b]thiophene carboxylic acid 3-chloro-benzo[b]thio-phene-2-carboxylic acid 3-chlorobenzo [b]thiophene-2-carboxylic acid 3-chloro-1-benzothiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene-2-carboxylic acid 3-Chlorobenzothiophene-2-carboxylic acid 21211-22-3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Chlorobenzo[b]thiophene-2-carboxylic acid 3-chlorobenzo(b)thiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene carboxylic acid 3-chloro-2-benzo[b]thiophene carboxylic acid 3-chloro-benzo[b]thio-phene-2-carboxylic acid 3-chlorobenzo [b]thiophene-2-carboxylic acid 3-chloro-1-benzothiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene-2-carboxylic acid 3-Chlorobenzothiophene-2-carboxylic acid 21211-22-3 (CAS 21211-22-3), a certified reference material (molecular formula C9H13ClO2S, MW 220.72 g/mol) for analytical method development and quality control.
Structurally, 3-Chlorobenzo[b]thiophene-2-carboxylic acid 3-chlorobenzo(b)thiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene carboxylic acid 3-chloro-2-benzo[b]thiophene carboxylic acid 3-chloro-benzo[b]thio-phene-2-carboxylic acid 3-chlorobenzo [b]thiophene-2-carboxylic acid 3-chloro-1-benzothiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene-2-carboxylic acid 3-Chlorobenzothiophene-2-carboxylic acid 21211-22-3 (C9H13ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 220.72 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 3-Chlorobenzo[b]thiophene-2-carboxylic acid 3-chlorobenzo(b)thiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene carboxylic acid 3-chloro-2-benzo[b]thiophene carboxylic acid 3-chloro-benzo[b]thio-phene-2-carboxylic acid 3-chlorobenzo [b]thiophene-2-carboxylic acid 3-chloro-1-benzothiophene-2-carboxylic acid 3-chloro-benzo[b]thiophene-2-carboxylic acid 3-Chlorobenzothiophene-2-carboxylic acid 21211-22-3 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 | C9H13ClO2S |
| Molecular Weight | 220.72 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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