BCECF, AM ester is membrane-permeant and thus can be loaded into cells via incubation. This product is a mixture of three molecular species, all of which are readily hydrolyzed by endogenous esterases into a single BCECF free acid form once they are in the cells.    White solid soluble in DMSO and DMF  Store at -20°C and protect from light, especially in solution  MW: approx. 615  [117464-70-7]