2-methyl-5-nitro-1H-indole CAS 7570-47-0
| CAS No. | 7570-47-0 |
| Molecular Formula | C9H16N2O2 |
| Molecular Weight | 184.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-methyl-5-nitro-1H-indole (CAS 7570-47-0), molecular formula C9H16N2O2 and molecular weight 184.24 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 2-methyl-5-nitro-1H-indole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.24 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.
As a certified reference material (CRM), 2-methyl-5-nitro-1H-indole 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 | C9H16N2O2 |
| Molecular Weight | 184.24 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
Related methyl Standards
- 7-methyl-5-nitro-1H-indole (CAS 10553-08-9)
- 3-methyl-4-nitro-1H-indole (CAS 134271-94-6)
- 2-methyl-6-nitro-1H-indole (CAS 3484-23-9)
- 3-methyl-5-nitro-1H-indole (CAS 61861-88-9)
- 5-nitro-1,2,3,4-tetrahydroisoquinoline (CAS 41959-45-9)
- 2-Nitro-4,5,6,7-tetrahydrothieno[3,2-c]pyridine (CAS 792159-56-9)
- 6-Methyl-8-nitro-1,2,3,5,6,7-hexahydroimidazo[1,2-c]pyrimidine (CAS 113029-25-7)
- 1-Butyl-4-nitro-1H-pyrazol-5-amine (CAS 1250346-92-9)
Recommended Standards
- 2-Methyl-5-(pyridin-4-yl)aniline (CAS 761441-12-7)
- 2-Methyl-5-(pyridin-2-yl)aniline (CAS 857221-89-7)
- 2-methylimidazo[1,2-a]pyridine-3-carboxylic acid (CAS 21801-79-6)
- 2-Methyl-3-(pyridin-3-yl)aniline (CAS 264617-05-2)
- 3-(3-Chlorophenyl)-3-(2,5-dimethyl-1H-pyrrol-1-yl)propanoic acid (CAS 861207-88-7)
- 4-Hydroxy-1-methylpiperidine-4-carboxylic acid (CAS 757127-21-2)
- 4-(3,5-Difluorophenyl)benzonitrile (CAS 1365272-12-3)
- 2-((1S,2S)-2-(Fluoromethyl)cyclopropyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2766566-87-2)
- Fluticasone Impurity 40 (CAS 25256-97-7)
- 5-Ethyl-3-phenyl-1H-pyrazole (CAS 141665-22-7)
- 4-((4-Bromo-2-methylphenyl)sulfonyl)morpholine (CAS 313250-75-8)
- N-(1-Hydroxy-2-methylpropan-2-yl)formamide (CAS 682-85-9)
- 4,4'-Bipyridinium, 1,1''-[1,4-phenylenebis(methylene)]bis-, dibromide (CAS 106867-97-4)
- Ganirelix 1-4 peptide (CAS 208599-57-9)
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