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Product Description

items specifications characters white or almost white crystals or crystalline powder slightly soluble in water ,freely soluble in methylene chloride, sparingly soluble in in acetonitrile and in anhydrous ethanol identification (1)?ir spectrum conforms with rs (2)?gives reaction of bromides tests appearance of solu- tion solution is clear solution is not more intensely coloured than reference solution by7 specific optical rotation + 30.5°~ + 35.0° related substances impurity a=0.25% impurity b=0.25% impurity c=0.25% impurity d=0.25% impurity e=0.25% individual unknown impurity =0.1% total impurities =0.7% residual solvents methylene chloride =600ppm methanol=3000ppm ethyl ether =5000ppm water =4.0% sulphated ash =0.1% endotoxin <10eu/mg assay 99.0%~101.0%