3-Chloro-4-methylthiophene-2-carboxylic acid CAS 229342-86-3
| CAS No. | 229342-86-3 |
| Molecular Formula | C6H5ClO2S |
| Molecular Weight | 176.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Chloro-4-methylthiophene-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.
3-Chloro-4-methylthiophene-2-carboxylic acid (CAS 229342-86-3) is a high-purity analytical reference standard with the molecular formula C6H5ClO2S and a molecular weight of 176.62 g/mol.
Based on its molecular formula C6H5ClO2S, 3-Chloro-4-methylthiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.62 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).
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 | C6H5ClO2S |
| Molecular Weight | 176.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2022 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-5-methylthiophene-2-carboxylic acid (CAS 123418-43-9)
- 2-Chloro-5-methylthiazole-4-carboxamide (CAS 1379296-94-2)
- 2-Chloro-1-(4-methyl-1,2,3-thiadiazol-5-yl)ethan-1-one (CAS 1504719-85-0)
- (Z)-5-chloro-n'-hydroxythiophene-2-carboximidamide (CAS 90981-26-3)
- 2-Chloro-4-methylthiazole-5-carboxamide (CAS 856658-33-8)
- 2-Chloro-4-methylthiophene-3-carboxylic Acid (CAS 85345-22-8)
- 2-chloro-5-fluoro-4-prop-1-ynyl-pyrimidine (CAS 2748015-16-7)
- 2-Chloro-5-methylthiophene-3-carboxylic acid (CAS 54494-61-0)
Recommended Standards
- 2-Chloro-N-(1,3-thiazol-2-yl)acetamide (CAS 5448-49-7)
- 3-Chlorothiophene-2-carbohydrazide (CAS 478483-31-7)
- 3-Methoxythiophene-2-carbonyl chloride (CAS 54450-14-5)
- 4-Chloro-2-(methylsulfinyl)pyrimidine (CAS 97229-10-2)
- Methyl 3,5-Dioxohexanoate (CAS 29736-80-9)
- (R)-2-((tert-butoxycarbonyl)amino)-2-(3-(trifluoromethyl)bicyclo[1.1.1]Pentan-1-yl)acetic acid (CAS 1987261-12-0)
- 5-(4-Chlorophenyl)furan-2-carbonyl chloride (CAS 57753-80-7)
- 1,3-Dichloro-7-methoxyisoquinoline (CAS 24623-40-3)
- (R)-Ethyl 2-amino-3-(4-fluorophenyl)propanoate hydrochloride (CAS 2061996-60-7)
- 4-(Benzo[d][1,3]dioxol-5-yl)cyclohex-3-enone (CAS 1252615-58-9)
- 5-Nitronaphthalen-1-ol (CAS 6304-46-7)
- 6-Bromo-4-methyl-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine (CAS 1518963-29-5)
- [1,1'-Bi(cyclopropan)]-1-amine (CAS 882489-65-8)
- Fibrinopeptide B (human) (CAS 36204-23-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com