4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl 4-nitrobenzoate CAS 58906-06-2
| CAS No. | 58906-06-2 |
| Molecular Formula | C26H23N3O5 |
| Molecular Weight | 457.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl 4-nitrobenzoate.
4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl 4-nitrobenzoate (CAS 58906-06-2), molecular formula C26H23N3O5 and molecular weight 457.48 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Butyl-5-oxo-1,2-diphenyl-2,5-dihydro-1H-pyrazol-3-yl 4-nitrobenzoate (C26H23N3O5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 457.48 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C26H23N3O5 |
| Molecular Weight | 457.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 1-(4-Chlorophenyl)-3,4-diiodo-2,5-dimethyl-1H-pyrrole (CAS 2404734-03-6)
- Allyl 3-((3-(benzyloxy)-2-(ethoxycarbonyl)-4-oxopyridin-1(4H)-yl)amino)morpholine-4-carboxylate (CAS 2119729-44-9)
- (2R,3R,4S,5R)-2-(6-((Anthracen-9-ylmethyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 94617-16-0)
- H-Glu-Phe-Tyr-OH (CAS 70421-70-4)
- 1-(2-Pyrazinyl)cyclopropanamine Hydrochloride (CAS 1255099-26-3)
- 3-(Naphthalen-1-yl)butan-1-amine (CAS 1249590-22-4)
- 1-Boc-4-cyano-4-methylpiperidine (CAS 530115-96-9)
- 2-(2,3-dihydro-1h-inden-5-yloxy)pyridine-4-carboximidamide hydrochloride (CAS 1223627-47-1)
- 4-(2-Hydroxypyridin-3-yl)benzaldehyde (CAS 1261995-12-3)
- 5-(2-Fluoro-5-methoxyphenyl)pyrimidin-2-ol (CAS 1261980-00-0)
- 1'-(tert-Butoxycarbonyl)-[1,4'-bipiperidine]-3-carboxylic acid (CAS 1160248-52-1)
- Bosentan USP Related Compound B (CAS 174227-14-6)
- 2,4,5-Trichloro-N-(2-phenoxypropyl)aniline (CAS 1040681-16-0)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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