3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine CAS 740837-57-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 740837-57-4 |
| Molecular Formula | C15H11ClF3N3O |
| Molecular Weight | 341.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 740837-57-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C15H11ClF3N3O. Molecular weight: 341.72 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C15H11ClF3N3O |
| Molecular Weight | 341.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 3-Chloro-5-(2-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 678560-80-0)
- 3-Chloro-5-(4-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 677345-89-0)
- 5-(2-Chloro-4-(trifluoromethyl)phenoxy)-3-ethylbenzo[d]isoxazole (CAS 114195-16-3)
- 2-(4-Chloro-2-methylphenoxy)-2,2-difluoro-N-(4-methoxyphenyl)acetamide (CAS 339010-99-0)
- 2-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-2-(2-thienylmethyl)malononitrile (CAS 339102-34-0)
- 4-(2-Chloro-4-nitrostyryl)benzene-1-sulfonyl fluoride (CAS 21278-66-0)
- 4-(2-Chloro-5-nitrostyryl)benzene-1-sulfonyl fluoride (CAS 31368-33-9)
- 4-Chloro-5,7-bis(4-fluorophenyl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 907585-57-3)
Recommended Standards
- 2-[(4-Chlorophenyl)sulfonyl]-5-nitrobenzoic acid (CAS 99768-25-9)
- 2-(tert-Butyl)-6-(trifluoromethyl)benzo[d]oxazole-7-sulfonyl chloride (CAS 914638-38-3)
- Diiodo(phenyl)borane (CAS 17381-60-1)
- 2,5-Dimethylfuran-3-carboxylic acid 2,5-dimethyl-3-furoic acid 2,5-dimethyl-3-furancarboxylic acid 2,5-dimethyl-furan-3-carboxylic acid 636-44-2 (CAS 636-44-2)
- Theophylline Impurity 11 (CAS 24442-57-7)
- 5-Bromo-2-trifluoromethyl-pyridin-3-ylamine (CAS 1211533-18-4)
- N-(1-(aminomethyl)cyclopentyl)-3-methyl-[1,2,4]triazolo[4,3-a]pyrazin-8-amine (CAS 1492570-57-6)
- 1-Bromo-3-difluoromethoxy-2-fluoro-4-nitrobenzene (CAS 1807196-14-0)
- 3,4,4,4-Tetrafluoro-3-(trifluoromethoxy)butan-1-ol (CAS 1378864-58-4)
- (DTyr27,36,DThr32)-Neuropeptide Y (27-36) (CAS 163887-48-7)
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