| CAS No. | 338417-01-9 |
| Molecular Formula | C15H11ClN2OS |
| Molecular Weight | 302.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
As a certified reference material (CRM), (2E)-7-Chloro-2-[(phenylamino)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-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.
(2E)-7-Chloro-2-[(phenylamino)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 338417-01-9), molecular formula C15H11ClN2OS and molecular weight 302.78 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H11ClN2OS, (2E)-7-Chloro-2-[(phenylamino)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 302.78 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
| Molecular Formula | C15H11ClN2OS |
| Molecular Weight | 302.78 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |