5-Chloro-3-(2-fluoro-phenyl)-[1,2,4]thiadiazole CAS 138426-25-2
| CAS No. | 138426-25-2 |
| Molecular Formula | C8H4ClFN2S |
| Molecular Weight | 214.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-3-(2-fluoro-phenyl)-[1,2,4]thiadiazole (CAS 138426-25-2) is a high-purity analytical reference standard with the molecular formula C8H4ClFN2S and a molecular weight of 214.65 g/mol.
Structurally, 5-Chloro-3-(2-fluoro-phenyl)-[1,2,4]thiadiazole (C8H4ClFN2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 214.65 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 5-Chloro-3-(2-fluoro-phenyl)-[1,2,4]thiadiazole 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 | C8H4ClFN2S |
| Molecular Weight | 214.65 g/mol |
| 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.) | 1996 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- MEthyl 4-chloro-3-ethoxybenzoate (CAS 1379365-32-8)
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- 5-Chloro-3-(4-fluorophenyl)-1,2,4-thiadiazole (CAS 138426-27-4)
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