5-Methoxy-6-nitro-1H-indazole-3-carbaldehyde CAS 1956306-99-2
| CAS No. | 1956306-99-2 |
| Molecular Formula | C9H7N3O4 |
| Molecular Weight | 221.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.17 g/mol gives 5-Methoxy-6-nitro-1H-indazole-3-carbaldehyde distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Methoxy-6-nitro-1H-indazole-3-carbaldehyde (CAS 1956306-99-2), molecular formula C9H7N3O4 and molecular weight 221.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Methoxy-6-nitro-1H-indazole-3-carbaldehyde (C9H7N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 221.17 g/mol, it falls into the medium-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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | 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.) | 1996 |
| Nitrogen Atoms | 3 |
Related Methoxy Standards
- 6-Methoxy-4-nitro-1H-indazole-3-carbaldehyde (CAS 1000341-26-3)
- 2-Methoxy-5-(4-nitrophenyl)-1,3,4-oxadiazole (CAS 102925-87-1)
- 6-Methoxy-7-nitroquinazolin-4(3H)-one (CAS 196195-00-3)
- 1-(2-Methoxy-4-nitrophenyl)-1H-tetrazole (CAS 328548-64-7)
- 5-Methoxy-2,3-dioxoindoline-7-carboxylic acid (CAS 214637-64-6)
- 4-Methoxy-2-(trifluoromethoxy)benzylamine (CAS 1159512-67-0)
- 3-Methoxy-4-(2,2,2-trifluoroethoxy)aniline (CAS 1245823-98-6)
- (4-Methoxy-3-(trifluoromethoxy)phenyl)methanamine (CAS 1261865-55-7)
Recommended Standards
- 7-Hydroxy-4-methyl-6-nitro-2H-chromen-2-one (CAS 19037-68-4)
- Methyl 2,4-dioxo-1,2,3,4-tetrahydropyrido[3,2-d]pyrimidine-6-carboxylate (CAS 1956332-21-0)
- N-(4-cyano-2-nitrophenyl)glycine (CAS 19005-68-6)
- Methyl 3-nitroimidazo[1,2-a]pyridine-7-carboxylate (CAS 1823865-12-8)
- 5-Bromo-N-(tert-butyl)-2-(methylamino)pyridine-3-sulfonamide (CAS 1275661-58-9)
- methyl 4-[4-(chloromethyl)-1,3-oxazol-2-yl]benzoate (CAS 942404-59-3)
- N-(4-Aminophenyl)-2-(2-methylphenoxy)acetamide (CAS 313518-46-6)
- (2-Fluoro-6-methylphenyl)boronic acid (CAS 887471-69-4)
- 3-Chloro-2,2-dimethyl-N-(thiazol-2-yl)propanamide (CAS 454473-70-2)
- 5-(2-Methoxyphenyl)-4-(4-methylphenyl)-4h-1,2,4-triazole-3-thiol (CAS 23292-16-2)
- 1-Cyclopentyl-1h-pyrazole-5-carbaldehyde (CAS 669050-76-4)
- IMIDAZO[1,2-C]PYRIMIDIN-5-OL (CAS 55662-66-3)
- (2R,4R)-4-((tert-butyldiphenylsilyl)oxy)pyrrolidine-2-carboxylic acid (CAS 866327-21-1)
- Neuropeptide W-23 (human) (CAS 383415-79-0)
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