IntroductionThe complex natural product paclitaxel( Tax-ol○R,1 a) ,first isolated from Taxus brevifolia[1] ,has an excellentclinical activity againstovarian an
SBR In the first half of June 2008,in spite of increased ex-factory price of SBR (styrene-butadiene rubber) in some do-mestic producers,the price of SBR wasdow