Ethyl 5-nitro-1H-indazole-3-carboxylate CAS 78155-85-8
| CAS No. | 78155-85-8 |
| Molecular Formula | C10H9N3O4 |
| Molecular Weight | 235.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 5-nitro-1H-indazole-3-carboxylate 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.
Ethyl 5-nitro-1H-indazole-3-carboxylate (CAS 78155-85-8), molecular formula C10H9N3O4 and molecular weight 235.20 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 5-nitro-1H-indazole-3-carboxylate (C10H9N3O4) 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.
Physical & Chemical Properties
| Molecular Formula | C10H9N3O4 |
| Molecular Weight | 235.20 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.) | 1979 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 3-(6-Nitro-1h-indazol-1-yl)propanoic acid (CAS 1016767-65-9)
- Ethyl 6-nitro-1H-indazole-3-carboxylate (CAS 1445966-87-9)
- Ethyl 6-nitro-1H-benzo[d]imidazole-4-carboxylate (CAS 1805873-68-0)
- 3-(6-Nitro-1H-benzo[d]imidazol-2-yl)propanoic acid (CAS 33299-25-1)
- 5-Nitro-1H-benzoimidazole-2-carboxylic acid ethylester (CAS 29039-60-9)
- Ethyl 7-nitro-1H-indazole-3-carboxylate (CAS 865886-78-8)
- Methyl 2-(6-nitro-1H-indazol-1-yl)acetate (CAS 316364-61-1)
- 1-Methyl-1-(2-nitro-4-(trifluoromethyl)phenyl)hydrazine (CAS 120940-43-4)
Recommended Standards
- Ethyl 3-nitroimidazo[1,2-a]pyridine-2-carboxylate (CAS 62223-44-3)
- Ethyl 5-nitroimidazo[1,2-a]pyridine-3-carboxylate (CAS 885271-33-0)
- Ethyl 2-cyano-2-(3-nitropyridin-2-yl)acetate (CAS 5236-72-6)
- Ethyl 5-nitropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 885271-11-4)
- 2-Amino-1-((3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)pyrimidin-4(1H)-one (CAS 5975-05-3)
- 5-(2-Methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 679421-43-3)
- 6-Bromo-2-chloro-7-fluoroquinoline-3-carbaldehyde (CAS 1309365-70-5)
- (1,1-Dioxido-1,2-thiazinan-3-yl)methanol (CAS 1314089-73-0)
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