4-(5-Hydroxy-3-(4-nitrophenyl)-1H-pyrazol-1-yl)benzamide CAS 634199-37-4
| CAS No. | 634199-37-4 |
| Molecular Formula | C16H12N4O4 |
| Molecular Weight | 324.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-(5-Hydroxy-3-(4-nitrophenyl)-1H-pyrazol-1-yl)benzamide (C16H12N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 324.29 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
4-(5-Hydroxy-3-(4-nitrophenyl)-1H-pyrazol-1-yl)benzamide (CAS 634199-37-4), molecular formula C16H12N4O4 and molecular weight 324.29 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C16H12N4O4 |
| Molecular Weight | 324.29 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.) | 1985 |
| Nitrogen Atoms | 4 |
Related Hydroxy Standards
- 2-Hydroxy-5-((5-oxo-6-phenyl-4,5-dihydro-1,2,4-triazin-3-yl)amino)benzoic acid (CAS 1417635-98-3)
- 4’-Hydroxy Nimesulide (CAS 109032-22-6)
- 1-(6-Hydroxy-2-(4-methoxybenzoyl)-3-methylbenzofuran-5-yl)ethanone (CAS 106206-63-7)
- 4-Hydroxy-N-(4-methoxyphenyl)-2-oxo-1-phenyl-2,5-dihydro-1H-pyrrole-3-carboxamide (CAS 1221504-66-0)
- (S)-3-Hydroxy Warfarin (CAS 124952-36-9)
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- Ethyl 4-hydroxy-7-methyl-2-oxo-1-phenyl-1,2-dihydro-1,8-naphthyridine-3-carboxylate (CAS 1253791-02-4)
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Recommended Standards
- 4-(4-Methoxybenzylidene)-2-(4-nitrophenyl)oxazol-5(4H)-one (CAS 40108-81-4)
- 4,4'-((4H-1,2,4-Triazol-4-yl)azanediyl)dibenzoic acid (CAS 2244394-30-5)
- 3-Nitro-N-(5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)benzamide (CAS 6750-79-4)
- 4-Amino-7-(2-C-methyl-β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylic acid (CAS 443642-56-6)
- 1-(3-Fluorophenyl)cyclopentanemethanamine (CAS 359715-61-0)
- (1-Cyclohexyl-1h-1,2,3-triazol-4-yl)methanol (CAS 1249257-87-1)
- 4-Chloro-6-nitro-1H-indazole-3-carbaldehyde (CAS 887570-76-5)
- 3-Oxo-3-(3-((trifluoromethyl)thio)phenyl)propanenitrile (CAS 677713-04-1)
- Ethyl 5-(4-fluorophenyl)-2-methyl-1H-pyrrole-3-carboxylate (CAS 881674-04-0)
- 3-Hydroxy-3-(5-methylthiophen-2-yl)propanoic acid (CAS 1249958-27-7)
- 5-Tert-butyl-1-[(2-fluorophenyl)methyl]-1h-1,2,3-triazole-4-carboxylic acid (CAS 1266832-16-9)
- 7-Ethoxyquinoline-4(1H)-thione (CAS 178984-15-1)
- Dicyclohexylamine (2S,3S)-2-((tert-butoxycarbonyl)amino)-3-hydroxybutanoate (CAS 1464025-91-9)
- Tau Peptide (512-525) amide trifluoroacetate salt (CAS 2022956-61-0)
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