5-Hydroxy-1h-1,2,4-triazole-3-carboxylic acid hydrate CAS 1185301-74-9
| CAS No. | 1185301-74-9 |
| Molecular Formula | C3H3N3O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Hydroxy-1h-1,2,4-triazole-3-carboxylic acid hydrate (CAS 1185301-74-9), molecular formula C3H3N3O3H2O and molecular weight 147.09 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C3H3N3O3H2O, 5-Hydroxy-1h-1,2,4-triazole-3-carboxylic acid hydrate contains an amino-acid-derived structure, an amide group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 147.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C3H3N3O3 H2O |
| Molecular Weight | 147.09 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
Related Hydroxy Standards
- N-(4-Hydroxy-3-oxo-2,3-dihydro-1H-inden-5-yl)acetamide (CAS 1000333-88-9)
- 1-Benzyl-4-hydroxy-6-carbomoyl-5-azaindole (CAS 1000342-24-4)
- 3-Hydroxy-4-cyano (1H)Indazole (CAS 1000342-91-5)
- 6-Hydroxy-1,2-dihydro-3H-indazol-3-one (CAS 1000343-86-1)
- 3-Hydroxy-5-ethylisoxazole (CAS 10004-45-2)
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Recommended Standards
- Benzyl ((3-aminotetrahydrofuran-3-yl)methyl)carbamate (CAS 1158760-33-8)
- N-Methyl-4-nitro-N-phenylbenzamide (CAS 961-61-5)
- 2-(5-Methoxy-1-methyl-2,4-dioxo-1,4-dihydropyrido[2,3-d]pyrimidin-3(2H)-yl)-N-propylacetamide (CAS 921490-20-2)
- 4,4-Difluoropiperidin-2-one hydrochloride (CAS 2306272-70-6)
- 2-(4-Methoxyphenyl)-1-(pyridin-3-yl)ethan-1-one (CAS 23827-45-4)
- Butyl Dichloromethyl Ether (CAS 5312-73-2)
- 2-(2-Methyl-6-oxo-4-(pyridin-2-yl)pyrimidin-1(6H)-yl)acetic acid (CAS 1710293-18-7)
- 2-(Morpholin-4-yl)quinoline-4-carboxylic acid (CAS 449764-66-3)
- 3-Methyl-1H-pyrrolo[2,3-b]pyridine-6-carboxylic acid (CAS 1363380-77-1)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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