The solubilities of the lower testosterone esters

Abstract The solubilities of the formate to valerate esters of testosterone have been determined in water and several organic solvents. The aqueous solubilities decrease logarithmically as the homologous series is ascended, but the acetate is less soluble than anticipated in the organic solvents. The variation in solubility from ester to ester can be predicted in the organic solvents from thermodynamic data, and is a reflection of the differences in melting point. The melting point differences are explained from the space group dimensions and the area of α to α face contact in the crystals.