CAS number： 135046-48-9
Molecular formula： C16H16ClNO2S.H2O4S
molecular weight： 419.9
Chemical structure：
| TESTS | SPECIFICATION | RESULT |
| Description | White to off-white powder | Off-white powder |
| Solubility | Freely soluble in pH1, Practically insoluble at neutral pH. | Complies |
| Identification | ||
| a. IR absorption | The IR Spectrum of Sample concordant with that of working standard spectrum | Conforms |
| b. HPLC | The retention time of the major peak in the chromatogram of Assay preparation corresponds to that in the chromatogram of the Standard preparation as obtained in the Assay. | Conforms |
| c. Sulfate | It responds to the test for sulfate | Conforms |
| Loss on drying | NMT 0.50% w/w | |
| Residue on ignition | NMT 0.10% w/w | 0.03%w/w |
| Related Compounds (By HPLC) | ||
| Related Compound A | NMT 0.20% | ND |
| Related Compound B | NMT 0.30% | Below limit |
| Related Compound C | NMT 0.5% | |
| Any other Impurity | NMT 0.10% | Below limit |
| Total Impurities | NMT 0.50% | Below limit |
| Assay on dried basis (By HPLC ) | NLT 97.00% and 101.50% | |
