1-(2-Nitrophenyl)-1h-pyrazole-4-carboxylic acid CAS 1006952-14-2
| CAS No. | 1006952-14-2 |
| Molecular Formula | C10H7N3O4 |
| Molecular Weight | 233.18 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 1-(2-Nitrophenyl)-1h-pyrazole-4-carboxylic acid.
1-(2-Nitrophenyl)-1h-pyrazole-4-carboxylic acid (CAS 1006952-14-2), molecular formula C10H7N3O4 and molecular weight 233.18 g/mol, is a CATO reference standard with documented purity and traceability.
1-(2-Nitrophenyl)-1h-pyrazole-4-carboxylic acid (C10H7N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 1-(2-Nitrophenyl)-1h-pyrazole-4-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C10H7N3O4 |
| Molecular Weight | 233.18 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.) | 1988 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 1-(2-Nitrophenyl)-1h-pyrazole-3-carboxylic acid (CAS 1006442-69-8)
- 1-(3-Nitrophenyl)-1h-pyrazole-3-carboxylic acid (CAS 1152836-50-4)
- 1-(2-Nitrophenyl)imidazole-4-carboxylic acid (CAS 1272840-24-0)
- 5-(3-Nitrophenyl)furan-2-carboxylic acid (CAS 13130-13-7)
- 5-(3-Nitrophenyl)-1H-pyrazole-3-carboxylic acid (CAS 1557038-82-0)
- 5-(4-Nitrophenyl)-1H-pyrazole-3-carboxylic acid (CAS 189083-63-4)
- 1-(4-Nitrophenyl)-1h-pyrazole-3-carboxylic acid (CAS 19532-43-5)
- 1-((4-Nitrophenyl)amino)-1H-pyrrole-2,5-dione (CAS 20970-39-2)
Recommended Standards
- 4-Oxo-1,4-dihydroquinoline-3,6-dicarboxylic acid (CAS 1018060-59-7)
- 3-Bromo-5-(tert-butyl)-2-methylthiophene (CAS 83174-17-8)
- 4-Amino-6-nitroquinoline-3-carboxylic acid (CAS 1018127-54-2)
- 3-Bromo-2-(tert-butyl)-5-methylthiophene (CAS 36880-45-2)
- H-D-Tyr(PO3H2)-OH (CAS 108321-25-1)
- 3,4-Dimethylhexan-2-ol (CAS 19550-05-1)
- 1-(4-Fluorophenyl)-3-phenylprop-2-en-1-one (CAS 399-10-0)
- Brexpiprazole Impurity 87 (CAS 62969-59-9)
- 1-(Tert-butyl) 2-methyl (2S,4R)-4-hydroxy-2-methylpyrrolidine-1,2-dicarboxylate (CAS 144527-33-3)
- Boc-D-His(Dnp)-OH-IPA (CAS 204125-03-1)
- Risperidone RC 23 (CAS 84163-48-4)
- 2-((3-Chloro-2-nitrophenyl)amino)butanoic acid (CAS 1464832-52-7)
- N-(4-(2,5-Dichlorothiophen-3-yl)thiazol-2-yl)-4-(pyrrolidin-1-ylsulfonyl)benzamide (CAS 325988-92-9)
- HA Peptide (CAS 92000-76-5)
Why CATO?
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