103856-74-2 5-Methyl-1-(2-nitrophenyl)-1H-pyrazole-3-carboxylic acid 7825AC C11H9N3O4 CAS 103856-74-2
| CAS No. | 103856-74-2 |
| Molecular Formula | C11H9N3O4 |
| Molecular Weight | 247.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
103856-74-2 5-Methyl-1-(2-nitrophenyl)-1H-pyrazole-3-carboxylic acid 7825AC C11H9N3O4 (C11H9N3O4) 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).
103856-74-2 5-Methyl-1-(2-nitrophenyl)-1H-pyrazole-3-carboxylic acid 7825AC C11H9N3O4 (CAS 103856-74-2) is a high-purity analytical reference standard with the molecular formula C11H9N3O4 and a molecular weight of 247.21 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 103856-74-2 5-Methyl-1-(2-nitrophenyl)-1H-pyrazole-3-carboxylic acid 7825AC C11H9N3O4 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 | C11H9N3O4 |
| Molecular Weight | 247.21 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 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.) | 1986 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
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Recommended Standards
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- n-(2,3-Dichlorobenzyl)pentan-1-amine (CAS 893587-46-7)
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- 2-Bromo-4-(difluoromethyl)-6-methoxy-3-nitropyridine (CAS 1805417-50-8)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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