2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid CAS 116273-51-9
| CAS No. | 116273-51-9 |
| Molecular Formula | C5H5N3O4 |
| Molecular Weight | 171.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 171.11 g/mol gives 2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid (CAS 116273-51-9) is a high-purity analytical reference standard with the molecular formula C5H5N3O4 and a molecular weight of 171.11 g/mol.
2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid (C5H5N3O4) contains a carbohydrate-derived structure, an amide group. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid 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 | C5H5N3O4 |
| Molecular Weight | 171.11 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 methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 1-Methyl-4-nitro-1H-imidazole-2-carboxylic acid (CAS 109012-24-0)
- 1-Methyl-5-nitro-1h-pyrazole-3-carboxylic acid (CAS 1171709-53-7)
- 1-(5-Nitro-2H-tetrazol-2-yl)propan-2-one (CAS 131394-19-9)
- Methyl 4-nitro-1H-pyrazole-5-carboxylate (CAS 1345513-95-2)
- 2-(5-Nitro-1H-imidazol-1-yl)acetic acid (CAS 14766-55-3)
- 1-Methyl-3-nitro-1h-pyrazole-5-carboxylic acid (CAS 177409-39-1)
- Methyl 3-nitro-1H-pyrazole-4-carboxylate (CAS 1798715-16-8)
- 1-Methyl-5-nitro-1H-pyrazole-4-carboxylic acid (CAS 18213-77-9)
Recommended Standards
- 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-hydroxyacetic acid (CAS 114505-81-6)
- 2-Methyl-5-nitrofuran-3-carboxylic acid (CAS 129423-27-4)
- 1-Acetyl-1,3,5-triazinane-2,4,6-trione (CAS 102635-15-4)
- 6,7-Difluorobenzoxazol-2(3H)-one (CAS 509147-86-8)
- 1,3-Difluoro-2-(5-iodo-2-nitrophenoxy)-5-(trifluoromethyl)benzene (CAS 2244088-49-9)
- Benzyl 2-[[(2R)-2-[[2-(tert-Butoxycarbonylamino)acetyl]amino]-4-methyl-pentanoyl]amino]acetate (CAS 2126144-18-9)
- 4-Chloro-1-fluoro-2-isopropylbenzene (CAS 112611-91-3)
- 3-(2-Fluoro-6-iodophenyl)-1,2,4-oxadiazole (CAS 1262412-81-6)
- 2-(4-Acetylpiperazin-1-yl)-n'-hydroxyethanimidamide (CAS 280110-89-6)
- 3-(3-Nitrophenyl)oxetan-3-amine hydrochloride (CAS 1706463-15-1)
- 6-Chloro-N-isobutyl-2-pyridinamine (CAS 1220035-15-3)
- 2-(Chloromethyl)-5-cyano-4-(difluoromethyl)-3-nitropyridine (CAS 1804690-80-9)
- (E)-1,2-dichloro-4-(2-nitrovinyl)benzene (CAS 37630-23-2)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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