?10-Deacetylbaccatin (CAS NO.32981-86-5), its Synonyms are 7,11-Methano-5H-cyclodeca(3,4)benz(1,2-b)oxet-5-one, 12b-(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,6,9,11-tetrahydroxy-4a,8,13,13-tetramethyl-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)- ; 10-Deacetylbaccatin III ; 12b-(Acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,6,9,11-tetrahydroxy-4a,8,13,13-tetramethyl-7,11-methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one ; 10-Deacetylbaccatin11 ; 10-Deacetylbaccatiniii(extaxusbaccata) . It is white solid.