the optical activity {3R-(-)-methyl-cyclo penta decan-1-one} (C16H30O). It is the most important raw material in producing many. the optical activity {3R-(-)-methyl-cyclo penta decan-1-one} (C16H30O). It is the most important raw material in producing many kinds of medicines, perfume and cosmetic ,etc. After tested by ¹HNMR,¹³CNMR of shanghai Research Institute of Sciences,the product is proven ...