Ethyl 4-amino-1H-imidazole-5-carboxylate CAS 21190-16-9
| CAS No. | 21190-16-9 |
| Molecular Formula | C6H9N3O2 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H9N3O2, Ethyl 4-amino-1H-imidazole-5-carboxylate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Ethyl 4-amino-1H-imidazole-5-carboxylate (CAS 21190-16-9), a certified reference material (molecular formula C6H9N3O2, MW 155.15 g/mol) for analytical method development and quality control.
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 | C6H9N3O2 |
| Molecular Weight | 155.15 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 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 4-Amino-1-ethyl-1h-pyrazole-3-carboxylic acid (CAS 1006322-92-4)
- 4-Amino-1,5-dimethyl-1h-pyrazole-3-carboxylic acid (CAS 1006336-98-6)
- 2-(3-Amino-5-methyl-1h-pyrazol-1-yl)acetic acid (CAS 1006348-73-7)
- 3-Amino-1-ethyl-1h-pyrazole-5-carboxylic acid (CAS 1006451-71-3)
- 2-(4-Amino-1h-pyrazol-1-yl)propanoic acid (CAS 1006455-81-7)
- 3-(4-Amino-1H-pyrazol-1-yl)propanoic acid (CAS 1006455-84-0)
- 3-(3-Amino-1h-pyrazol-1-yl)propanoic acid (CAS 1006486-03-8)
- Ethyl 1-amino-1H-imidazole-2-carboxylate (CAS 1008130-15-1)
Recommended Standards
- Ethyl 4-amino-1H-imidazole-2-carboxylate (CAS 83566-37-4)
- Ethyl 4-amino-1H-pyrazole-5-carboxylate hydrochloride (CAS 55904-61-5)
- Ethyl 3-oxo-2,3-dihydro-1H-pyrrole-1-carboxylate (CAS 281657-97-4)
- Ethyl 4-methylisoxazole-3-carboxylate (CAS 38061-69-7)
- N-(2,3-Dimethylphenyl)-3-oxobutanamide (CAS 55909-76-7)
- Methyl 5-(thiazol-4-yl)furan-2-carboxylate (CAS 1399658-81-1)
- 2-Amino-6-Trifluoromethylbenzonorbornene (CAS 83118-50-7)
- 4-Ethyl-1-methyl-3-(trifluoromethyl)-1h-pyrazol-5-amine (CAS 1156894-90-4)
- Mosapride Impurity 29 (CAS 22116-33-2)
- N-(4-Amino-2-methylphenyl)-2-(4-methylphenoxy)-butanamide (CAS 1020057-48-0)
- 5-Methoxy-1H-indene-1,3(2H)-dione (CAS 17666-95-4)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (5-(2-(trifluoromethyl)phenyl)thiazol-4-yl)boronate (CAS 2223042-12-2)
- 2-(2-(1H-Pyrazol-1-yl)ethoxy)aniline (CAS 1052606-76-4)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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