4-Nitro-N-phenyl-1H-pyrazole-3-carboxamide CAS 309740-93-0
| CAS No. | 309740-93-0 |
| Molecular Formula | C10H8N4O3 |
| Molecular Weight | 232.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Nitro-N-phenyl-1H-pyrazole-3-carboxamide (C10H8N4O3) is characterized by an amino-acid-derived structure, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-Nitro-N-phenyl-1H-pyrazole-3-carboxamide (CAS 309740-93-0), molecular formula C10H8N4O3 and molecular weight 232.20 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C10H8N4O3 |
| Molecular Weight | 232.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Related Nitro Standards
- 2-(3-Nitro-1H-1,2,4-triazol-1-yl)-1-phenylethan-1-one (CAS 184706-40-9)
- 1-[4-(4-Nitro-1H-1,2,3-triazol-1-yl)phenyl]ethan-1-one (CAS 478041-21-3)
- 1-(6-Nitro-2H-1,3-benzodioxol-5-yl)-1H-pyrrole (CAS 1280538-10-4)
- 2-(3-Methyl-4-nitro-phenyl)-oxazole-4-carbaldehyde (CAS 885274-46-4)
- 6-nitro-2,3,4,9-tetrahydro-1H-carbazol-3-ol (CAS 1440155-19-0)
- 4-(4-Nitro-1H-indol-3-yl)butan-2-one (CAS 885266-72-8)
- 5-Nitro-1,3-dihydrospiro[indene-2,3'-pyrrolidin]-2'-one (CAS 879132-38-4)
- 7'-Nitro-2',3'-dihydro-1'H-spiro[cyclobutane-1,4'-isoquinolin]-1'-one (CAS 2568928-21-0)
Recommended Standards
- 4-{[(4-nitrophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 339020-77-8)
- 4-Phenyl-2-(trifluoromethyl)butanoic acid (CAS 932710-62-8)
- 4-(Pyridin-4-ylcarbamoyl)-1H-imidazole-5-carboxylic acid (CAS 627470-18-2)
- 5-((2H-Tetrazol-5-yl)methyl)-3-methyl-3,5-dihydro-4H-imidazo[4,5-d]pyridazin-4-one (CAS 2639697-40-6)
- 5-((3-Methylbenzyl)thio)pentan-2-one (CAS 1340171-37-0)
- 4-(Benzyloxy)-2-chloro-3-(trifluoromethyl)pyridine (CAS 1254981-27-5)
- n-(1-Methoxypropan-2-yl)-2,3-dihydro-1h-inden-2-amine (CAS 416861-87-5)
- Methyl 5-(2-acetamidophenyl)oxazole-4-carboxylate (CAS 62175-50-2)
- (2R,4S)-4-Methoxy-1-methylpyrrolidine-2-carboxylic acid (CAS 1860012-48-1)
- Elagolix Impurity 37 (CAS CATO-C4X-206837)
- Fmoc-Met-OH (CAS 71989-28-1)
- Tert-butyl ((3aR,7aS)-octahydro-1H-isoindol-4-yl)carbamate (CAS 2306259-68-5)
- 4-Amino-3-methylbiphenyl-2,3,4,5,6-d (CAS 1020718-97-1)
- Palmitoyl Tetrapeptide-7 (CAS 221227-05-0)
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