CAS:83905-01-5 FORMULA:C38H72N2O12 749.00 Characters :White or almost white powder Specific optical rotation: -45 to -49 pH :9.0-11.0 Related substances :Impurity A below 0.06% Impurity B below0.5% Water :not above 4.5% Sulphated ash :not above 0.2% Heavy metals :not above 25ppm Assay :not above 955 IU per mg Package : 25kg/drum 10kg/drum