CAS number： 82159-09-9
Molecular formula： C15H13NO3S2
molecular weight： 319.4
Chemical structure：
| Items | Specifications | Results | |||||
| Appearance | yellow to orange, crystals or crystalline powder, discoloration and decomposition under light | Complies | |||||
| Solubility | soluble in N, N-dimethylformamide,slightly soluble in methanol and in ethanol (99.5), and practically insoluble in water. | Complies | |||||
| Melting Point | 222~227℃ | 222.5~225.0℃ | |||||
| Identification | UV complies | Complies | |||||
| IR complies | Complies | ||||||
| Related substance | Single impurity | ≤0.20% | 0.04% | ||||
| Total impurities | ≤1.0% | 0.06% | |||||
| Residual solvent | Alcohol | ≤0.5% | 0.06% | ||||
| Tetrahydrofuran | ≤0.072% | 0.04% | |||||
| Acetic acid | ≤0.5% | No detected | |||||
| Loss on drying | ≤0.2% | 0.04% | |||||
| Residue on ignition | ≤0.1% | 0.00% | |||||
| Heavy metals | ≤10ppm | Complies | |||||
| Particle size | D50: 8~10μm | 9.4μm | |||||
| D90: 17~23μm | 19.8μm | ||||||
| Assay on dried | 98.0%~101.0% | 100.50% | |||||
| Conclusion | Complies with the requirement of JP17 | ||||||
| Containers and storage | Containers—Tight containers | Storage—Light-resistant | |||||
