2-Ethyl-6-nitro-2H-indazole CAS 65642-29-7
| CAS No. | 65642-29-7 |
| Molecular Formula | C9H9N3O2 |
| Molecular Weight | 191.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Ethyl-6-nitro-2H-indazole (CAS 65642-29-7), a certified reference material (molecular formula C9H9N3O2, MW 191.19 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 2-Ethyl-6-nitro-2H-indazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 191.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C9H9N3O2 |
| Molecular Weight | 191.19 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.) | 1975 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 2-Ethyl-4-nitro-1H-benzo[d]imidazole (CAS 101236-92-4)
- 2-Methyl-2-(5-nitro-2-pyridinyl)propanenitrile (CAS 1256633-31-4)
- (7-Nitro-1H-indol-3-yl)methanamine (CAS 1360936-75-9)
- 1-(4-Nitro-1h-indol-3-yl)methanamine (CAS 153310-50-0)
- 2-Methyl-8-nitro-1,4-dihydroquinoxaline (CAS 1823888-40-9)
- 1-Ethyl-4-nitro-1H-benzo[d]imidazole (CAS 31419-70-2)
- 1-Ethyl-5-nitro-1H-benzo[d]imidazole (CAS 90349-15-8)
- 1-Ethyl-5-nitro-1H-indazole (CAS 5228-51-3)
Recommended Standards
- 2-Ethyl-6-nitro-1h-1,3-benzodiazole (CAS 5805-42-5)
- 2-Methoxy-5-(1H-tetrazol-1-yl)aniline (CAS 924871-47-6)
- 2-Cyclopropylpyrazolo[1,5-a]pyrimidine-5,7(4H,6H)-dione (CAS 893447-40-0)
- 2-Methoxy-5-(2H-tetrazol-5-yl)aniline (CAS 383870-78-8)
- 4-Amino-2-bromo-6-(difluoromethyl)nicotinic acid (CAS 1806889-57-5)
- 5,6-Dihydro-4H-cyclopenta[c]isoxazol-6-amine (CAS 1417728-48-3)
- Tert-butyl 4-(2-amino-6-fluorophenyl)piperazine-1-carboxylate (CAS 1173833-72-1)
- Thiol-PEG12-acid (CAS 2211174-73-9)
- (R)-2-(3,4,5-trifluorophenyl)piperidine (CAS 1213520-89-8)
- Titanium(IV) 5,10,15,20-tetra(pyridin-4-yl)porphyrin-21,23-diide oxide (CAS 105250-49-5)
- Mal-PEG1-acid (CAS 760952-64-5)
- 3,4-Diisopropylfuran-2,5-dione (CAS 35068-24-7)
- 1,1'-Binaphthyl-2,2'-dithiol (CAS 102555-71-5)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
Why CATO?
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