1-(4-chloro-2-methylphenyl)-2,3-dihydro-1H-1,2,4-triazol-3-one CAS 42097-63-2
| CAS No. | 42097-63-2 |
| Molecular Formula | C9H8ClN3O |
| Molecular Weight | 209.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(4-chloro-2-methylphenyl)-2,3-dihydro-1H-1,2,4-triazol-3-one 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.
1-(4-chloro-2-methylphenyl)-2,3-dihydro-1H-1,2,4-triazol-3-one (CAS 42097-63-2), molecular formula C9H8ClN3O and molecular weight 209.63 g/mol, is a CATO reference standard with documented purity and traceability.
1-(4-chloro-2-methylphenyl)-2,3-dihydro-1H-1,2,4-triazol-3-one (C9H8ClN3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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.
Physical & Chemical Properties
| Molecular Formula | C9H8ClN3O |
| Molecular Weight | 209.63 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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