| Molecular formula :C5H11NO2S        Molecular weight :149.21 Application :It is used in biochemical research and nutritional supplements, as well as in the adjuvant treatment of pneumonia, cirrhosis and fatty liver. Property :This product is white crystal or crystalline powder. Melting point 276-279 ° C (dec.), specific optical rotation 23.25 ° (c = 2, 6N HCl). Water soluble: soluble. CAS NO.:63-68-3 
	
		
			| Item | AJI92 | USP26 |  
			| Assay | 99.0~101.0% | 98.5~101.5% |  
			| pH | 5.0~6.5 | 5.0~6.5 |  
			| Specific rotation | [a]D020 | -11.3~-12.1º |  
			|             | [a]D025 | -9.8~-11.2º |  
			| Transmittance(T430) | ≥98.0% |   |  
			| Chloride(Cl) | ≤0.02% | ≤0.04% |  
			| Ammonium(NH4) | ≤0.02% |   |  
			| Sulfate(SO4) | ≤0.02% | ≤0.04% |  
			| Iron(Fe) | ≤10ppm | ≤30ppm |  
			| Heavy metals(Pb) | ≤10ppm | ≤15ppm |  
			| Arsenic | ≤1ppm(As2O3) | ≤1.5ppm(As2O3) |  
			| Other amino acids | Conforms |   |  
			| Loss on drying | ≤0.20% | ≤0.30% |  
			| Residue on ignition | ≤0.10% | ≤0.40% |  
			| Organic volatile impurities |   | Conforms |  
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