Product Name: Testosterone Propionate Alias: Testoviron; Sterandryl; Agovirin; Testosteron; Test Prop CAS No: 57-85-2 MF: C22H32O3 MW: 344.49 Appearance: White crystall powder Usage: Testosterone propionate is therefore much faster acting than other testosterone esters such as cypionate or enanthate, and requires a much more frequent dosing schedule, in order to maintain stable blood levels.