10-Deacetyl Aaccatin Baccatin III (10-DAB) - it is derived from the Botanical source viz., from the leaves of yew trees and it is used as starting materials for numerous partial syntheses. The basic function of this source is its excellent anti-cancer properties. The esterification of 10-DAB with long chain fatty acids can also generate an important enhancement of their pharmacological action pattern. 10-DAB is an intermediate, which is isolated and purified from yew species such as Taxus baccata in a second but primary multi-step process. 10 DAB III is a Plant extract - As baccatin III is an immediate diterpenoid precursor of taxol, the increase of baccatin III is beneficial to the biosynthesis of taxol. There are at least 12 distinct enzymatic reactions involved in Taxol biosynthesis (1, 2).