5-(4-Chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one CAS 59719-19-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 59719-19-6 |
| Molecular Formula | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-Chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 59719-19-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H7ClN2O. Molecular weight: 194.62 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H7ClN2O |
| Molecular Weight | 194.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 1-(3-Chlorophenyl)-2,3-dihydro-1h-imidazol-2-one (CAS 109130-25-8)
- 5-(2-Chlorophenyl)-3-methyl-1,2,4-oxadiazole (CAS 1120271-16-0)
- 1-(2-Chlorophenyl)-1h-1,2,4-triazol-5-amine (CAS 1247575-06-9)
- 4-(2-Chlorophenyl)-1,3-oxazol-2-amine (CAS 1248965-63-0)
- 5-(4-Chlorophenyl)oxazol-2(3h)-imine (CAS 13576-51-7)
- 5-[(4-chlorophenyl)methyl]-2h-1,2,3,4-tetrazole (CAS 14064-61-0)
- 5-(3-Chlorophenyl)-1,2-oxazol-3-amine (CAS 1480388-66-6)
- 5-(3-Chlorophenyl)-4h-1,2,4-triazol-3-amine (CAS 168893-31-0)
Recommended Standards
- 5-(4-Chlorophenyl)-1H-1,2,4-triazol-3-amine (CAS 98554-00-8)
- 5-(4-Chlorophenyl)-3-methyl-1,2,4-oxadiazole (CAS 89804-65-9)
- 5-(4-Chlorophenyl)-1,2-oxazol-3-amine (CAS 51791-16-3)
- Octahydropyrrolo[3,4-b]pyrrole dihydrochloride (CAS 479070-13-8)
- 6-(Methylsulfonyl)pyridine-3-boronic Acid Pinacol Ester (CAS 1052138-94-9)
- N-(2-(5-amino-1,3,4-thiadiazol-2-yl)ethyl)-4-nitrobenzenesulfonamide (CAS 1199215-83-2)
- 4-(Benzyloxy)-N-(3-methylbenzyl)aniline (CAS 1040689-35-7)
- Methyl 2-(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)acetate (CAS 6535-93-9)
- 2-Bromo-5-fluoro-3-hydroxybenzoic acid (CAS 1807041-76-4)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
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