| CAS No. | 88541-07-5 |
| Molecular Formula | C8H4ClN3O2S |
| Molecular Weight | 241.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 241.65 g/mol gives 5-Chloro-3-(4-nitrophenyl)-1,2,4-thiadiazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Chloro-3-(4-nitrophenyl)-1,2,4-thiadiazole (CAS 88541-07-5), a certified reference material (molecular formula C8H4ClN3O2S, MW 241.65 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H4ClN3O2S, 5-Chloro-3-(4-nitrophenyl)-1,2,4-thiadiazole contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 241.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-(4-nitrophenyl)-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.
| Molecular Formula | C8H4ClN3O2S |
| Molecular Weight | 241.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; 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.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |