1-Methyl-5-nitro-1h-indole-2-carboxylic acid CAS 71056-94-5
| CAS No. | 71056-94-5 |
| Molecular Formula | C10H8N2O4 |
| Molecular Weight | 220.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Methyl-5-nitro-1h-indole-2-carboxylic acid.
1-Methyl-5-nitro-1h-indole-2-carboxylic acid (CAS 71056-94-5) is a high-purity analytical reference standard with the molecular formula C10H8N2O4 and a molecular weight of 220.18 g/mol.
1-Methyl-5-nitro-1h-indole-2-carboxylic acid (C10H8N2O4) 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. 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.
CATO manufactures 1-Methyl-5-nitro-1h-indole-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H8N2O4 |
| Molecular Weight | 220.18 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.) | 1977 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 2-Nitro-5-(prop-2-yn-1-ylamino)benzoic acid (CAS 1019386-49-2)
- Methyl 6-nitro-1H-indole-4-carboxylate (CAS 1082040-42-3)
- Methyl 5-nitro-1H-indole-7-carboxylate (CAS 1082040-74-1)
- 2-(6-Nitro-1H-indol-1-yl)acetic acid (CAS 1095507-43-9)
- 3-Methyl-7-nitro-1H-indole-2-carboxylic acid (CAS 115058-18-9)
- 1-methyl-3-nitro-1,2,3,4-tetrahydroquinoline-2,4-dione (CAS 1172850-09-7)
- 6-Nitro-1h-indol-3-yl acetate (CAS 1306604-44-3)
- Methyl 5-nitro-1H-indole-6-carboxylate (CAS 1352394-34-3)
Recommended Standards
- 1-Acetyl-3-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid (CAS 5236-78-2)
- 2-((2H-tetrazol-5-yl)methoxy)benzoic acid (CAS 27068-79-7)
- 1-[3-(4-Nitrophenyl)-1,2,4-oxadiazol-5-yl]methanamine (CAS 90323-86-7)
- 2-((2-Oxo-2H-chromen-4-yl)oxy)acetic acid (CAS 462094-45-7)
- (4-Methoxy-2-methylphenyl)(5-methylthiophen-2-yl)methanol (CAS 1281606-80-1)
- 3-Chloro-5-(trifluoromethyl)phenylacetic acid (CAS 886496-99-7)
- ethyl 5-amino-2-(phenylsulfanyl)benzoate (CAS 1308601-26-4)
- (1-(O-tolyl)-1H-imidazol-4-yl)methanamine (CAS 1368885-46-4)
- 4-[(1E)-3-(4-Methylpiperazin-1-yl)-3-oxoprop-1-en-1-yl]benzonitrile (CAS 298215-49-3)
- 1-Methylene-1,2-dihydroisoquinoline (CAS 74477-04-6)
- 5-Oxa-2-azaspiro[3.4]octane (CAS 145309-24-6)
- 3-Chloro-2-fluoro-6-(oxan-4-yloxy)pyridine (CAS 1881331-66-3)
- 1-Dodecylguanidine hydrochloride (CAS 13590-97-1)
- (Pro30,Tyr32,Leu34)-Neuropeptide Y (28-36) (CAS 161650-01-7)
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