4-Oxo-4,5-dihydro-1H-imidazole-2-carboxylic acid CAS 861293-24-5
| CAS No. | 861293-24-5 |
| Molecular Formula | C4H4N2O3 |
| Molecular Weight | 128.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 128.09 g/mol gives 4-Oxo-4,5-dihydro-1H-imidazole-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Oxo-4,5-dihydro-1H-imidazole-2-carboxylic acid (CAS 861293-24-5), molecular formula C4H4N2O3 and molecular weight 128.09 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Oxo-4,5-dihydro-1H-imidazole-2-carboxylic acid (C4H4N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 128.09 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Oxo-4,5-dihydro-1H-imidazole-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 | C4H4N2O3 |
| Molecular Weight | 128.09 g/mol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Oxo Standards
- 3-Oxo-2,3-dihydro-1H-pyrazole-4-carboxylic acid (CAS 478968-51-3)
- 5-Oxo-4,5-dihydro-1h-pyrazole-3-carboxylic acid (CAS 71173-77-8)
- 5,6-Dihydro-2H-pyran-3-carboxylic acid (CAS 100313-48-2)
- 3,6-dihydro-2H-pyran-2-carboxylic acid (CAS 116233-54-6)
- Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate (CAS 164928-01-2)
- 1-Methyl-4,5-dihydro-1H-imidazole-4-carboxylic acid (CAS 17289-23-5)
- 1-(5,6-dihydro-1,4-dioxin-2-yl)ethan-1-one (CAS 59602-14-1)
- 2-Methyl-4,5-dihydro-1h-imidazole-4-carboxylic acid (CAS 902771-01-1)
Recommended Standards
- 4,4,4-Trifluoro-1-butanol (CAS 461-18-7)
- 5-(Hydroxymethylene)imidazolidine-2,4-dione (CAS 597528-45-5)
- 5,6-Dihydroxy-4(3H)-pyrimidinone (CAS 98020-41-8)
- 3-Methyl-5-nitro-1H-1,2,4-triazole (CAS 24156-65-8)
- 3-(2,2,2-Trifluoro-1-hydroxyethyl)benzoic acid (CAS 1555494-89-7)
- 5-(2-Methylbenzyl)-1H-pyrrole-2-carboxylic acid (CAS 1706445-03-5)
- 7-Fluoro-2-(pyridin-3-yl)indoline (CAS 592465-99-1)
- 7-fluoro-1H-indole-5-carboxylic acid (CAS 256935-99-6)
- 4-Bromofluoren-9-one (CAS 4269-17-4)
- 3-Bromo-7-methoxyimidazo[1,2-a]pyridine (CAS 342613-73-4)
- 3-(cyclopropylmethyl)-8-(trifluoromethyl)-7-vinyl-[1,2,4]triazolo[4,3-a]pyridine (CAS 1254982-02-9)
- (R)-tert-Butyl (1-(2-aminoacetyl)pyrrolidin-3-yl)(ethyl)carbamate (CAS 1354001-98-1)
- 3-Bromo-7-chloropyrazolo[1,5-a]pyrimidine (CAS 877173-84-7)
- [pGlu] Semaglutide (CAS CATO-C4X-2226288)
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