Ethyl 1-(3,5-dichlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylate CAS 1000576-61-3
| CAS No. | 1000576-61-3 |
| Molecular Formula | C11H9Cl2N3O3 |
| Molecular Weight | 302.11 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 Ethyl 1-(3,5-dichlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylate.
Ethyl 1-(3,5-dichlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylate (CAS 1000576-61-3), molecular formula C11H9Cl2N3O3 and molecular weight 302.11 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Ethyl 1-(3,5-dichlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylate (C11H9Cl2N3O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 302.11 g/mol, it falls into the moderately-high-molecular-weight range. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Ethyl 1-(3,5-dichlorophenyl)-2,5-dihydro-5-oxo-1H-1,2,4-triazole-3-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H9Cl2N3O3 |
| Molecular Weight | 302.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 1-(3,4-dichlorophenyl)-5-oxo-2,5-dihydro-1H-1,2,4-triazole-3-carboxylate (CAS 1000576-77-1)
- 2-(5-(3,4-Dichlorophenyl)-4-nitro-1H-pyrazol-1-yl)ethanol (CAS 1707375-20-9)
- 2-(5-(2,4-Dichlorophenyl)-4-nitro-1H-pyrazol-1-yl)ethanol (CAS 1707375-22-1)
- 2-(5-(3,5-Dichlorophenyl)-4-nitro-1H-pyrazol-1-yl)ethanol (CAS 1708260-07-4)
- 3-(2,4-Dichlorophenyl)-6-ethoxy-1,3,5-triazine-2,4(1H,3H)-dione (CAS 63308-64-5)
- N-(2,4-Dichlorophenyl)-2,6-difluorobenzamide (CAS 406926-84-9)
- N-(2,5-Dichlorophenyl)-2,6-difluorobenzamide (CAS 937636-00-5)
- (2,3-Dichlorophenyl)(isoquinolin-4-yl)methanone (CAS 1187166-75-1)
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