4-Methyl-2-(pyrazin-2-yl)thiazole-5-carbonyl chloride CAS 257876-11-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 257876-11-2 |
| Molecular Formula | C9H6ClN3OS |
| Molecular Weight | 239.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Methyl-2-(pyrazin-2-yl)thiazole-5-carbonyl chloride (CAS 257876-11-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H6ClN3OS. Molecular weight: 239.68 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H6ClN3OS |
| Molecular Weight | 239.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methyl Standards
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- 4-(2-(Pyrazin-2-yl)oxazol-5-yl)aniline (CAS 163193-75-7)
- 2-((5-(Pyrazin-2-yl)-1,3,4-oxadiazol-2-yl)thio)acetic acid (CAS 104820-41-9)
- 3-(3-Pyrazin-2-yl-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one (CAS 1239755-14-6)
- 5-(3-(Pyrazin-2-yl)-1,2,4-oxadiazol-5-yl)pyridin-2-ol (CAS 1239843-33-4)
- 2-(Pyrazin-2-yl)-6-(trifluoromethyl)pyrimidin-4-ol (CAS 438249-86-6)
- 6-[3-(Pyrazin-2-yl)-1,2,4-oxadiazol-5-yl]-2,3-dihydropyridazin-3-one (CAS 1239847-01-8)
Recommended Standards
- 4-Chloro-N-(thiazol-2-yl)picolinamide (CAS 603955-34-6)
- 5-[(4-Chlorophenyl)methylene]-2,4-thiazolidinedione (CAS 24138-83-8)
- 4-Chloro-2-oxo-3-phenyl-2,3-dihydro-thiazole-5-carbaldehyde (CAS 324060-92-6)
- (R)-1-(3-fluoro-5-methoxyphenyl)pentan-1-amine (CAS 1212815-53-6)
- (2-Ethoxybenzoyl)valine (CAS 1397003-37-0)
- Glycolic acid-Threonine-Octreotide (CAS CATO-C4X-152019)
- tert-Butyl methyl(4-oxo-1,2,3,4-tetrahydronaphthalen-1-yl)carbamate (CAS 1956327-78-8)
- 2-Bromo-1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)ethanone (CAS 4629-54-3)
- (R)-2-((4S,5S)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl)-1-(trityloxy)but-3-en-2-ol (CAS 865838-12-6)
- Semaglutide impurity 49 (CAS CATO-C4X-222649)
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