1-Methyl-4-nitro-1H-imidazole-2-carboxylic acid CAS 109012-24-0
| CAS No. | 109012-24-0 |
| 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 1-Methyl-4-nitro-1H-imidazole-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-Methyl-4-nitro-1H-imidazole-2-carboxylic acid (CAS 109012-24-0), molecular formula C5H5N3O4 and molecular weight 171.11 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-Methyl-4-nitro-1H-imidazole-2-carboxylic acid (C5H5N3O4) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | 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.) | 1988 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 2-Methyl-5-nitro-1H-imidazole-4-carboxylic acid (CAS 116273-51-9)
- 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
- 1-Acetyl-1,3,5-triazinane-2,4,6-trione (CAS 102635-15-4)
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- 6,7-Difluorobenzoxazol-2(3H)-one (CAS 509147-86-8)
- 5,6-difluorobenzo[d]oxazol-2(3H)-one (CAS 871367-13-4)
- 2-(Bromomethyl)-6-fluoropyridine hydrobromide (CAS 31140-62-2)
- 1-Methyl-4-oxo-1,4-dihydroquinoline-3-carbaldehyde (CAS 70027-78-0)
- 2-(1-Naphthyloxy)-propionic acid (NOPA) (CAS 13949-67-2)
- 5-(4-Fluorophenyl)-1-propylpyrazolidin-3-one (CAS 131960-05-9)
- 3-(3-Methyl-1,2,4-oxadiazol-5-yl)benzoic acid (CAS 915707-45-8)
- 2-(3-(Benzyloxy)-4-methoxyphenoxy)acetonitrile (CAS 1219796-86-7)
- Diethylthiambutene-d10 Hydrochloride (CAS 1346603-31-3)
- tert-Butyl 6-bromo-4-(difluoromethyl)-1H-indazole-1-carboxylate (CAS 2173991-81-4)
- 2-(4-Methylpiperazin-1-yl)acetic acid dihydrochloride (CAS 171764-71-9)
- Des-Ile12-Aib13-Tirzepatide (CAS CATO-CPTD788960)
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