2-Chlorothiazole-4-carboxylic Acid CAS 5198-87-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 5198-87-8 |
| Molecular Formula | C4H2ClNO2S |
| Molecular Weight | 163.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Chlorothiazole-4-carboxylic Acid (CAS 5198-87-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C4H2ClNO2S. Molecular weight: 163.58 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C4H2ClNO2S |
| Molecular Weight | 163.58 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorothiazole Standards
- 5-Chlorothiazole-2-carboxylic Acid (CAS 101012-16-2)
- 4-Chlorothiazole-2-carboxylic acid (CAS 1211521-70-8)
- 5-Chlorothiazole-4-carboxylic acid (CAS 1505987-37-0)
- 2-Chlorothiazole-5-carboxylic acid (CAS 101012-12-8)
- 2-Chlorothiazole-4-carboxamide (CAS 928256-35-3)
- 2-Chlorothiazole-5-carboxamide (CAS 761454-63-1)
- 5-Chlorothiazole-2-carboxamide (CAS 98027-07-7)
- Methyl 4-chlorothiazole-5-carboxylate (CAS 1015591-57-7)
Recommended Standards
- 2-Chloro-3-nitrothiophene (CAS 5330-98-3)
- 3-chloro-2-nitrothiophene (CAS 33786-78-6)
- 3-Chloro-4-isothiazolecarboxylic Acid (CAS 933690-30-3)
- 4-((4-Chlorophenyl)thio)-5-methoxy-2-(methylthio)pyrimidine (CAS 338954-61-3)
- 2-(Benzofuran-2-yl)-4-(tert-butyl)morpholine (CAS 119491-61-1)
- n-(3-(Ethoxyamino)-3-oxopropyl)thiophene-3-carboxamide (CAS 1061799-25-4)
- Ethyl 5-(chloromethyl)benzofuran-2-carboxylate (CAS 13257-19-7)
- 5-(Pyrrolidin-2-yl)picolinonitrile (CAS 1270543-04-8)
- 4-chloro-3-methyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 871335-85-2)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
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 13829788188 / jacky.chen@cato-chem.com