1-Methyl-6-nitro-1H-indazole-3-carboxylic acid CAS 1058740-77-4
| CAS No. | 1058740-77-4 |
| Molecular Formula | C9H7N3O4 |
| Molecular Weight | 221.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Methyl-6-nitro-1H-indazole-3-carboxylic acid (CAS 1058740-77-4) is a high-purity analytical reference standard with the molecular formula C9H7N3O4 and a molecular weight of 221.17 g/mol.
Based on its molecular formula C9H7N3O4, 1-Methyl-6-nitro-1H-indazole-3-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 221.17 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).
As a certified reference material (CRM), 1-Methyl-6-nitro-1H-indazole-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H7N3O4 |
| Molecular Weight | 221.17 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 6-Methyl-5-nitro-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid (CAS 1000340-25-9)
- 2-Methyl-6-nitro-1h-benzo[d]imidazole-4-carboxylic acid (CAS 101861-49-8)
- 7-Nitro-1H-indazol-5-yl acetate (CAS 1031927-26-0)
- 2-Methyl-6-nitro-2H-indazole-3-carboxylic acid (CAS 1058740-78-5)
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- Methyl 7-nitro-1-benzofuran-2-carboxylate (CAS 114305-84-9)
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Recommended Standards
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- 2-Methoxy-5-(4-nitrophenyl)-1,3,4-oxadiazole (CAS 102925-87-1)
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- 3-{[4-(Trifluoromethoxy)benzyl]thio}propanoic acid (CAS 1016775-83-9)
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