Ethanol → 2-Hydroxyethyl 2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-3,4-dihydro-2H-1-benzopyran-6-yl butanedioate

Participants

Reaction Steps

TPGS (500 mg) was melted at 40°-60° C. in a water bath. Tamoxifen methiodide (100 mg, from Pharmos Corp., FL., USA) was added to the melted material and the mixture was agitated for several minutes. A small amount of absolute ethanol (up to 5%, v/v) was added in order to get an homogeneous mixture. PVP (Kollidon PF 12, 2.6 ml of a 10% solution in water) was then added and the mixture was agitated again for several minutes. Cab-O-Sil (2.8 ml of a 5% solution in water) was added and the mixture was agitated again for several minutes. The resultant TPGS/PVP/Tamoxifen methiodide mixture was then freeze-dried overnight using a Christ beta lyophilizer (Germany). A powdered free-flowing TPGS/PVP/Tamoxifen methyliodide coprecipitate quickly dispersible in water was obtained.

Provenance & Evidence