However, the parental strain EM01 is more resistant (MIC02.2 mM) to Imatinib methanesulfonate than the Pdrp-activated strain US50-18 C (MIC01.8 mM) while the
supersensitive AD deleted strains aremore sensitive to Imatinib methanesulfonate (MIC 1.6 mM) than the parental EM01. Moreover, an aqua-Molar content of 3-BP is almost 4 times lower than Gleevec (M.W. 166.96 versus 589.71, respectively).
Froma practical point of view it is worth to mention that the first drug is much cheaper. This important new finding suggests that 3-BP is less likely to develop multidrug resistance in the course of chemiotherapy (Endicott and Ling 1989; Gottesman and
Pastan 1993) than Imatinib methanesulfonate and many other drugs (such as daunorubicin, vinblastine and mitomycine).