5-(4-Nitrophenyl)-1,3-diphenyl-4,5-dihydro-1H-pyrazole CAS 15115-37-4
| CAS No. | 15115-37-4 |
| Molecular Formula | C21H17N3O2 |
| Molecular Weight | 343.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-(4-Nitrophenyl)-1,3-diphenyl-4,5-dihydro-1H-pyrazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-(4-Nitrophenyl)-1,3-diphenyl-4,5-dihydro-1H-pyrazole (CAS 15115-37-4), molecular formula C21H17N3O2 and molecular weight 343.38 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-(4-Nitrophenyl)-1,3-diphenyl-4,5-dihydro-1H-pyrazole (C21H17N3O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C21H17N3O2 |
| Molecular Weight | 343.38 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 1-(4-Nitrophenyl)-3,5-diphenyl-4,5-dihydro-1H-pyrazole (CAS 10252-45-6)
- Ethyl 5-(4-nitrophenyl)-2-(piperidin-1-yl)-1H-pyrrole-3-carboxylate (CAS 338406-28-3)
- 4-{2-[(4-nitrophenyl)sulfanyl]-4,5-dihydro-1H-imidazol-1-yl}benzoic acid (CAS 338772-90-0)
- Ethyl 4-((2-nitrophenyl)sulfonyl)piperazine-1-carboxylate (CAS 349099-38-3)
- (2E)-1-(4-Nitrophenyl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one (CAS 1103585-01-8)
- (2E)-1-(3-Nitrophenyl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one (CAS 1164523-33-4)
- (2E)-1-(4-Nitrophenyl)-3-(2,3,4-trimethoxyphenyl)prop-2-en-1-one (CAS 1287224-23-0)
- (2E)-1-(3-Nitrophenyl)-3-(2,3,4-trimethoxyphenyl)prop-2-en-1-one (CAS 1465134-53-5)
Recommended Standards
- JWH-072 N-propanoic acid metabolite (CAS 1451369-32-6)
- tert-Butyl 4-(5-nitro-1H-indol-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate (CAS 151273-41-5)
- Ethyl N-[4-Cyclohexyl-3-(trifluoromethyl)benzyl]oxyacetimidate (CAS 1418144-65-6)
- 3-(Phenylamino)-2-(2-phenylhydrazinyl)quinazolin-4(3H)-one (CAS 16802-76-9)
- 1,1'-(6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine-2,13-diyl)bis(pentan-1-one) (CAS 67967-48-0)
- 3-(Hexadecylamino)propanamide (CAS 36341-64-7)
- 1-pyrrolidin-3-ylpyrrolidine;dihydrochloride (CAS 957540-36-2)
- 5-Bromo-6-fluoroquinoline-2-carboxylic acid (CAS 1420790-57-3)
- 4-((5-Bromothiophen-2-yl)methyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 1696270-67-3)
- Fenoterol O-β-D-Glucuronide (CAS 61046-78-4)
- 6-(Trifluoromethoxy)quinoline-2-carbaldehyde (CAS 904369-14-8)
- 4-Bromo-2-hydroxy-6-methylpyridine (CAS 865156-59-8)
- 2-N-Methylquinoline-2,6-diamine (CAS 914460-72-3)
- Insulin Degludec Impurity 1 (CAS 843666-26-2)
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 18665070610 / Nicole.chen@cato-chem.com