5-Chloro-2-methyl-1,3-thiazole CAS 57268-15-2
| CAS No. | 57268-15-2 |
| Molecular Formula | C4H4ClNS |
| Molecular Weight | 133.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Chloro-2-methyl-1,3-thiazole 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.
5-Chloro-2-methyl-1,3-thiazole (CAS 57268-15-2) is a high-purity analytical reference standard with the molecular formula C4H4ClNS and a molecular weight of 133.60 g/mol.
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, 5-Chloro-2-methyl-1,3-thiazole is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 133.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H4ClNS |
| Molecular Weight | 133.60 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.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 3-Chloro-4-methylisothiazole (CAS 1072-56-6)
- 2-Chloro-1,3-dimethyl-1H-imidazol-3-ium chloride (CAS 125376-11-6)
- 5-Chloro-4-methylthiazole (CAS 125402-79-1)
- 3-Chloro-5-methylisothiazole (CAS 14217-67-5)
- 2-Chloro-4-methylthiazole (CAS 26847-01-8)
- 2-Chloro-5-methylthiazole (CAS 33342-65-3)
- 4-Chloro-3-methylisothiazole (CAS 930-43-8)
- 5-Chloro-2-thiophenamine (CAS 63806-78-0)
Recommended Standards
- 5-(Chloromethyl)thiazole (CAS 45438-77-5)
- 5-Chloro-3-methyl-isothiazole (CAS 20067-16-7)
- 4-(Chloromethyl)isothiazole (CAS 89033-79-4)
- 4-(chloromethyl)pyridine (CAS 10445-91-7)
- 4-(Difluoromethyl)-phenol (CAS 403648-76-0)
- 4-(2-((3,5-Dimethylphenyl)amino)-2-oxoethyl)phenyl cyclohexanecarboxylate (CAS 439096-85-2)
- 3-(3,4-Difluorophenyl)-4-methyl-1h-pyrazol-5-amine (CAS 1187056-90-1)
- Tevenel (CAS 4302-95-8)
- 2-Chloroquinoline-3-methanol (CAS 125917-60-4)
- 2-(5-Nitrofuran-2-yl)acetonitrile (CAS 115430-78-9)
- Ethyl 4-ethoxy-1-(4-fluorophenyl)-6-oxo-1,6-dihydropyridazine-3-carboxylate (CAS 886951-90-2)
- Fosaprepitant Impurity 14 (CAS CATO-C4X-116814)
- 5-Chloro-4-ethylpyrimidine (CAS 137994-42-4)
- Neuropeptide VF (124-131) (human) (CAS 311309-27-0)
Why CATO?
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