| Molecular formula :C3H7NO2S3 Molecular weight :185.28818 CAS NO. :56-89-3 
	
		
			| Item | USP28 |  
			| Assay | 98.5~101% |  
			| pH | 5.5~6.5 |  
			| Specific rotation[a]D020 | - 215°~ - 225° |  
			| Chloride(Cl) | ≤0.02% |  
			| Ammonium(NH4) | ≤0.02% |  
			| Sulfate(SO4) | ≤0.02% |  
			| Iron(Fe) | ≤10ppm |  
			| Heavy metals(Pb) | ≤10ppm |  
			| Arsenic | ≤1ppm |  
			| Other amino acids | Not detectable |  
			| Loss on drying | ≤0.20% |  
			| Residue on ignition | ≤0.10% |  
			| Supply reference |  
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			| Packing specification |   |  
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			| Quote reference    yuan/ton |   |  
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