4-Chlorothiazole CAS 4175-72-8
| CAS No. | 4175-72-8 |
| Molecular Formula | C3H2ClNS |
| Molecular Weight | 119.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 119.57 g/mol gives 4-Chlorothiazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chlorothiazole (CAS 4175-72-8) is a high-purity analytical reference standard with the molecular formula C3H2ClNS and a molecular weight of 119.57 g/mol.
4-Chlorothiazole (C3H2ClNS) contains a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C3H2ClNS |
| Molecular Weight | 119.57 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chlorothiazole Standards
- 2-Chlorothiazole (CAS 3034-52-4)
- 5-Chlorothiazole (CAS 4175-73-9)
- 4-Chlorothiazole-2-carbonitrile (CAS 1363383-13-4)
- 4-Chlorothiazole-5-carbonitrile (CAS 145383-72-8)
- 2-Chlorothiazole-4-carbonitrile (CAS 944124-72-5)
- 4-Chlorothiazole-5-carbaldehyde (CAS 104146-17-0)
- 5-Chlorothiazole-4-carbaldehyde (CAS 1161865-60-6)
- 4-Chlorothiazole-2-carbaldehyde (CAS 466686-79-3)
Recommended Standards
- 4-chloroisothiazole (CAS 25039-53-6)
- 5-Chloroisothiazole (CAS 56535-95-6)
- 3-Chloroisothiazole (CAS 14217-66-4)
- 3-Chloro-1-methylpyrrolidine (CAS 10603-46-0)
- Methyl 1-amino-4-chloro-1H-pyrrole-2-carboxylate (CAS 791780-57-9)
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- 1-[(tert-Butoxy)carbonyl]-1,2,3,4-tetrahydropyridine-2-carboxylic acid (CAS 1779402-01-5)
- 4-Methoxy-N,2,6-trimethylbenzenesulfonamide (CAS 1098374-65-2)
- Liraglutide (13-21) TFA Salt (CAS CATO-C4X-19928)
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