3-(3-Nitrophenyl)-1-phenyl-1h-pyrazole-4-carboxylic acid CAS 376358-93-9
| CAS No. | 376358-93-9 |
| Molecular Formula | C16H11N3O4 |
| Molecular Weight | 309.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-(3-Nitrophenyl)-1-phenyl-1h-pyrazole-4-carboxylic acid is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-(3-Nitrophenyl)-1-phenyl-1h-pyrazole-4-carboxylic acid (CAS 376358-93-9) is a high-purity analytical reference standard with the molecular formula C16H11N3O4 and a molecular weight of 309.28 g/mol.
Based on its molecular formula C16H11N3O4, 3-(3-Nitrophenyl)-1-phenyl-1h-pyrazole-4-carboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 309.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C16H11N3O4 |
| Molecular Weight | 309.28 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 1-(3-Nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid (CAS 62160-88-7)
- 1-(4-Nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid (CAS 62160-87-6)
- 3-(2-(3-Nitrophenyl)imidazo[1,2-a]pyridin-3-yl)acrylic acid (CAS 727652-20-2)
- 3-(2-(4-Nitrophenyl)imidazo[1,2-a]pyridin-3-yl)acrylic acid (CAS 820245-79-2)
- 5-(2-Nitrophenyl)-N-(pyridin-3-yl)furan-2-carboxamide (CAS 332119-10-5)
- 3-(3-Nitrophenyl)-5-(1-phenylpropyl)-1,2,4-oxadiazole (CAS 433947-24-1)
- 3-(4-Nitrophenyl)-5-(1-phenylpropyl)-1,2,4-oxadiazole (CAS 434312-23-9)
- 4-Methyl-11-(4-nitrophenyl)-2,3,7,11-tetraazatricyclo[7.4.0.0^{2,6}]trideca-1(9),3,5,7-tetraene (CAS 866049-91-4)
Recommended Standards
- 3-(Benzo[d][1,3]dioxol-5-yl)-5-(4-nitrophenyl)-1H-pyrazole (CAS 651717-31-6)
- 4,4'-(1H-1,2,4-Triazole-3,5-diyl)dibenzoic acid (CAS 65697-90-7)
- 2-Hydroxy-N-(9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)acetamide (CAS 851218-14-9)
- 4-[(8-Nitroquinolin-2-yl)amino]benzoic acid (CAS 330663-19-9)
- 6-Methylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 860416-19-9)
- 2-methyl-2H-indazole (CAS 4838-00-0)
- 2,6-Bis(trifluoromethyl)benzo[d]thiazole (CAS 1246965-94-5)
- 3,3-Difluorocyclopentanamine Hydrochloride (CAS 939398-48-8)
- N-(Naphthalen-1-yl)ethanethioamide (CAS 10319-80-9)
- Tert-butyl (1S,4S)-5-(4-(methoxycarbonyl)benzyl)-2,5-diazabicyclo[2.2.1]Heptane-2-carboxylate (CAS 927679-46-7)
- 2,4-Di-tert-butyl-5-cyclopropoxypyridine (CAS 1243453-12-4)
- Diethylaluminum Chloride - 25% in Toluene (about 2M) (CAS 96-10-6)
- 3-(1,3-Benzothiazol-2-yl)-1-[(4-methylphenyl)methyl]-1,2-dihydropyridin-2-one (CAS 860609-20-7)
- Smac-N7 Peptide (CAS 401913-57-3)
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