1-(4-Chlorophenyl)-3-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)urea CAS 59440-79-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 59440-79-8 |
| Molecular Formula | C18H17ClN4O2 |
| Molecular Weight | 356.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Chlorophenyl)-3-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)urea (CAS 59440-79-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H17ClN4O2. Molecular weight: 356.81 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H17ClN4O2 |
| Molecular Weight | 356.81 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorophenyl Standards
- (4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-({[(pyridin-3-yl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one (CAS 338751-19-2)
- 1-(3-Chlorophenyl)-3-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)urea (CAS 325850-26-8)
- 2-((4-(2-(2-Chlorophenyl)acetamido)but-2-yn-1-yl)oxy)benzamide (CAS 1421442-94-5)
- (E)-3-(5-(4-chlorophenyl)furan-2-yl)-2-cyano-N-((tetrahydrofuran-2-yl)methyl)acrylamide (CAS 444764-47-0)
- 4-(4-Chlorophenyl)-3-phenylisoxazolo[4,5-c]quinoline (CAS 253433-32-8)
- Ethyl 2-{3-[(4-chlorophenyl)methyl]-4-oxo-3,4-dihydrophthalazin-1-yl}acetate (CAS 866151-32-8)
- Ethyl 4-(4-chlorophenyl)-6-hydroxy-2-phenyl-4,5-dihydropyrimidine-5-carboxylate (CAS 400078-28-6)
- N-(2-chlorophenyl)-2-((4-fluorophenyl)sulfonamido)propanamide (CAS 317378-04-4)
Recommended Standards
- 2-((5-(5-Chlorothiophen-2-yl)-1,3,4-oxadiazol-2-yl)thio)-N-(5-methylisoxazol-3-yl)acetamide (CAS 850937-46-1)
- (R)-7-chloro-6-methoxy-4-((1-(pyridin-2-yl)ethyl)amino)quinoline-3-carboxamide (CAS 2444608-43-7)
- 3-Amino-N-(1-(2-chloro-4,6-dimethylphenyl)-5-oxo-4,5-dihydro-1H-pyrazol-3-yl)benzamide (CAS 88372-24-1)
- 2,4-Dimethoxybenzothiazole (CAS 858635-78-6)
- Methyl 4-iodooxazole-5-carboxylate (CAS 1823503-38-3)
- 4,9-Dioxa-1-azaspiro[5.5]undecan-5-one hydrochloride (CAS 2138271-62-0)
- 2-Methylindolizine (CAS 768-18-3)
- 2-Butyl-5-chlorobenzo[d]oxazole (CAS 866142-97-4)
- 5-(isocyanatomethyl)-3-methyl-1,2-oxazole (CAS 134517-52-5)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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