3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione CAS 149762-19-6
| CAS No. | 149762-19-6 |
| Molecular Formula | C5H9N3OS |
| Molecular Weight | 159.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione.
3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione (CAS 149762-19-6) is a high-purity analytical reference standard with the molecular formula C5H9N3OS and a molecular weight of 159.21 g/mol.
3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione (C5H9N3OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), 3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H9N3OS |
| Molecular Weight | 159.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Hydroxyethyl Standards
- (S)-3-(1-Hydroxyethyl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione (CAS 149762-20-9)
- (2-Hydroxyethyl)-methylcarbamic acid allyl ester (CAS 1339652-25-3)
- 1-[(2-Hydroxyethyl)amino]cyclobutane-1-carboxylic acid (CAS 1524928-07-1)
- (S)-2-Hydroxyethyl pyrrolidine-2-carboxylate (CAS 733697-14-8)
- 5-(2-Hydroxyethyl)-5-methyloxazolidine-2,4-dione (CAS 124315-43-1)
- (S)-5-(2-hydroxyethyl)-2,2-dimethyl-1,3-dioxolan-4-one (CAS 124724-88-5)
- 3-(2-Hydroxyethyl)tetrahydrofuran-3-carboxylic acid (CAS 1508378-26-4)
- (R)-5-(2-hydroxyethyl)-2,2-dimethyl-1,3-dioxolan-4-one (CAS 174563-88-3)
Recommended Standards
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- Semaglutide Impurity 5 (CAS 23406-82-8)
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