3-(5-Chlorothiophen-2-yl)benzoic acid CAS 920294-01-5
| CAS No. | 920294-01-5 |
| Molecular Formula | C13H10O4S |
| Molecular Weight | 262.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(5-Chlorothiophen-2-yl)benzoic 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.
3-(5-Chlorothiophen-2-yl)benzoic acid (CAS 920294-01-5), molecular formula C13H10O4S and molecular weight 262.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-(5-Chlorothiophen-2-yl)benzoic acid (C13H10O4S) 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 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 262.28 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C13H10O4S |
| Molecular Weight | 262.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Sulfur Atoms | 1 |
Related Chlorothiophen Standards
- (2r)-2-[(5-chlorothiophen-2-yl)formamido]-3-methylbutanoic acid (CAS 1568148-38-8)
- 2-(5-Chlorothiophen-2-yl)-1H-indole-3-carbaldehyde (CAS 590390-91-3)
- 4-(3-Chlorothiophen-2-yl)-2-(1H-pyrrol-1-yl)pyrimidine (CAS 860788-62-1)
- 4-(5-Chlorothiophen-2-yl)-2-(1H-pyrrol-1-yl)pyrimidine (CAS 860788-63-2)
- 5-(3-Chlorothiophen-2-yl)-3-(pyridin-2-yl)-1,2,4-oxadiazole (CAS 478488-64-1)
- 2-(((5-Chlorothiophen-2-yl)methyl)(methyl)amino)nicotinonitrile (CAS 1099275-37-2)
- 2-(4-((5-Chlorothiophen-2-yl)methyl)piperazin-1-yl)ethan-1-ol (CAS 1247902-51-7)
- 1-(5-Chlorothiophen-2-yl)-N-((4-methylmorpholin-2-yl)methyl)methanamine (CAS 1355716-66-3)
Recommended Standards
- 3-(5-Acetyl-2-thienyl)benzoic acid (CAS 893735-30-3)
- 3,3-Dimethyl-2,4-dioxa-9-thiaspiro[5.5]undecane-1,5-dione 9,9-dioxide (CAS 64096-86-2)
- 3-(2-((Difluoromethyl)thio)-4,6-dimethylpyrimidin-5-yl)propanoic acid (CAS 863668-50-2)
- 3'-Fluoro-3,4,5-trimethoxy-1,1'-biphenyl (CAS 942474-95-5)
- 4-(azetidin-1-yl)piperidine dihydrochloride (CAS 864246-02-6)
- 8-Amino-1,2,3,4-tetrahydronaphthalene-1-carbonitrile (CAS 1209459-87-9)
- Phytolaccagenin (CAS 1802-12-6)
- 3-(3,4-Dihydro-2H-pyrrol-5-yl)-2-(methylthio)pyridine (CAS 1352537-82-6)
- 1-(3-Methylbenzyl)piperazine-d8 (CAS 1189927-23-8)
- (3AR,4S,6R,6aS)-6-(4-chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxol-4-ol (CAS 2086766-07-4)
- Ethyl 5-hydroxy-3-methyl-1,2,4-triazine-6-carboxylate (CAS 36286-80-3)
- 5-Chloro-2-(phenyldiazenyl)pyridine (CAS 20815-69-4)
- 1-(2-Fluorophenyl)-3-phenyl-1h-pyrazole-5-carboxylic acid (CAS 618102-02-6)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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