4-Chloro-5-(ethylthio)-2-phenylpyridazin-3(2H)-one CAS 25381-21-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 25381-21-9 |
| Molecular Formula | C12H11ClN2OS |
| Molecular Weight | 266.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Chloro-5-(ethylthio)-2-phenylpyridazin-3(2H)-one (CAS 25381-21-9) pharmaceutical standards reference standard. Molecular formula: C12H11ClN2OS. Molecular weight: 266.75 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C12H11ClN2OS |
| Molecular Weight | 266.75 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.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-N-(2-(thiophen-2-yl)ethyl)picolinamide (CAS 1094306-31-6)
- 4-Chloro-6-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)pyrimidin-5-amine (CAS 1406797-03-2)
- 2-Chloro-N-(4-methyl-1,3-thiazol-2-yl)-2-phenylacetamide (CAS 328274-92-6)
- 2-Chloro-N-(4-methyl-thiazol-2-yl)-N-phenyl-acetamide (CAS 50772-64-0)
- 2-Chloro-N-(4-phenyl-1,3-thiazol-2-yl)propanamide (CAS 83758-08-1)
- 2-Chloro-N-(5-methyl-4-phenyl-thiazol-2-yl)-acetamide (CAS 53968-19-7)
- 2-Chloro-n-[3-(2-methyl-1,3-thiazol-4-yl)phenyl]acetamide (CAS 851288-86-3)
- 2-Chloro-N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]acetamide (CAS 6081-87-4)
Recommended Standards
- 4-Chloro-2-methyl-6-((phenylsulfinyl)methyl)pyrimidine (CAS 339278-67-0)
- 5-(1,2,3-Thiadiazol-4-yl)thiophene-2-sulfonyl chloride (CAS 320421-81-6)
- 4-(2-Chloropyrido[3,2-d]pyrimidin-4-yl)thiomorpholine (CAS 39551-50-3)
- tert-Butyl ((1-((S)-2-amino-3-methylbutanoyl)pyrrolidin-2-yl)methyl)(isopropyl)carbamate (CAS 1354025-50-5)
- 6-Methylquinoline-3-carboxylic Acid (CAS 254883-95-9)
- 1-(6-Fluoropyridin-3-yl)cyclopropane-1-carbonitrile (CAS 1427011-98-0)
- 1-(4-Fluoro-1H-indol-2-yl)ethanone (CAS 1481558-12-6)
- 2-Fluoro-3-hydroxy-6-methylbenzoic acid (CAS 1268718-24-6)
- Lifitegrast Impurity 69 (CAS CATO-C4X-240969)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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