4-(4-Acetyl-phenylamino)-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one CAS 571161-42-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 571161-42-7 |
| Molecular Formula | C19H19N3O2 |
| Molecular Weight | 321.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(4-Acetyl-phenylamino)-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one (CAS 571161-42-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C19H19N3O2. Molecular weight: 321.37 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C19H19N3O2 |
| Molecular Weight | 321.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 3 |
Related Acetyl Standards
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- Ethyl 2-[2-(phenylamino)-1,3-thiazol-4-yl]benzoate (CAS 339010-10-5)
- 4-(((5-(Phenylamino)-1,3,4-thiadiazol-2-yl)thio)methyl)benzonitrile (CAS 782457-31-2)
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Recommended Standards
- 4-(4,5-Diphenyl-1H-imidazol-2-yl)benzonitrile (CAS 29898-72-4)
- 4-(4-Fluorophenyl)-2-(5-phenyl-1H-pyrazol-1-yl)-1,3-thiazole (CAS 956977-61-0)
- 4-(4-(4-Methoxybenzoyl)piperazin-1-yl)benzonitrile (CAS 478046-64-9)
- Phenyl 2-Deoxy-1-thio-2-(2,2,2-trichloroethoxyformamido)-β-D-galactopyranoside (CAS 868230-98-2)
- 1-(2,3,6-Trifluorophenyl)ethan-1-amine (CAS 1270378-05-6)
- 5-Amino-6-oxopiperidine-2-carboxylic acid (CAS 247112-91-0)
- 6-Methyl-6H-thieno[2,3-b]pyrrole-5-carboxylic acid (CAS 1554281-31-0)
- 1-(4-Fluoro-3-methylphenyl)prop-2-en-1-one (CAS 1368396-11-5)
- 2-(5,6-Difluoro-4-(methoxymethoxy)naphthalen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2621935-28-0)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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