. . "The organic dibasic acid half esters of 7-ketocholesterol and of 7-hydroxycholesterol thus obtained can, in compliance with request, be led easily in a usual way to physiologically acceptable salts thereof, for example, alkali salts, such as potassium and sodium salts, alkali earth salts such as calcium salt, ammonium salt, and salts of organic base such as triethylamine, triethanolamine, etc." . . .