1-Methyl-5-nitro-1H-indazole CAS 5228-49-9
| CAS No. | 5228-49-9 |
| Molecular Formula | C8H7N3O2 |
| Molecular Weight | 177.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1-Methyl-5-nitro-1H-indazole (C8H7N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 177.16 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-Methyl-5-nitro-1H-indazole (CAS 5228-49-9), molecular formula C8H7N3O2 and molecular weight 177.16 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.
As a certified reference material (CRM), 1-Methyl-5-nitro-1H-indazole 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 | C8H7N3O2 |
| Molecular Weight | 177.16 g/mol |
| Appearance | Off-white to pale 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 6-Methyl-5-nitro-7H-pyrrolo[2,3-b]pyridine (CAS 1000340-19-1)
- 5-Nitro-1H-indol-6-amine (CAS 1000343-12-3)
- 4-Methyl-7-nitro-1H-benzo[d]imidazole (CAS 101420-63-7)
- 6-Methyl-4-nitro-1H-benzo[d]imidazole (CAS 101420-64-8)
- 3-Methyl-7-nitro-1H-indazole (CAS 101420-66-0)
- 4-Methyl-5-nitro-1H-indazole (CAS 101420-67-1)
- 4-Methyl-7-nitro-1H-indazole (CAS 104103-06-2)
- 5-Methyl-7-nitro-1H-indazole (CAS 113302-88-8)
Recommended Standards
- 1-Methyl-5-nitro-1H-benzo[d]imidazole (CAS 5381-78-2)
- 1-Methyl-6-nitro-1H-indazole (CAS 6850-23-3)
- 1-Methyl-4-nitrobenzimidazole (CAS 31493-66-0)
- 1-Methyl-6-nitrobenzimidazole (CAS 5381-79-3)
- 9-(4-(Benzyloxy)butyl)-9H-purin-6-amine (CAS 121683-05-4)
- (3-Isopropoxypyridin-4-yl)methanamine (CAS 1502188-63-7)
- 4-Bromo-2,5-dimethylpyrimidine (CAS 2169143-52-4)
- 4-(Difluoromethyl)-2-methylpyrimidine-5-carboxamide (CAS 1713713-51-9)
- 1-bromo-4-chloro-2-(2-isocyanatoethyl)benzene (CAS 1485381-99-4)
- Basmisanil (CAS 1159600-41-5)
- Roxatidine Impurity 59 (CAS CATO-C4X-121359)
- N-(4-Chlorophenyl)-3-((4-chlorophenyl)amino)-2-(3-methylisoxazol-5-yl)acrylamide (CAS 917837-54-8)
- 3-Bromo-2,5-dichloro-6-methylpyridine (CAS 1420800-44-7)
- Neuropeptide EI (human, mouse, rat) (CAS 125934-45-4)
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