ethyl 5-amino-4H-1,2,4-triazole-3-carboxylate;hydrochloride CAS 385784-78-1
| CAS No. | 385784-78-1 |
| Molecular Formula | C5H12N4O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
ethyl 5-amino-4H-1,2,4-triazole-3-carboxylate;hydrochloride (CAS 385784-78-1) is a high-purity analytical reference standard with the molecular formula C5H12N4O2HCl and a molecular weight of 196.63 g/mol.
ethyl 5-amino-4H-1,2,4-triazole-3-carboxylate;hydrochloride (C5H12N4O2HCl) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H12N4O2 HCl |
| Molecular Weight | 196.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- a-hydroxybutyric acid Sodium Salt (CAS 19054-57-0)
- Kumatakenin (CAS 3301-49-3)
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- N-(2-Bromo-4-fluorophenyl)-3-chlorobenzamide (CAS 1039903-59-7)
- 1-(2-((Methylamino)methyl)piperidin-1-yl)ethanone (CAS 1339902-95-2)
- (3-Bromo-5-fluoropyridin-4-yl)methanamine (CAS 1780333-78-9)
- 3-Hydroxybromazepam (CAS 13132-73-5)
- Hydroxy-PEG5-acid (CAS 2079768-50-4)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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