<unk> , or testosterone 17β-(2-methylpropanoate), is a synthetic androstane steroid and a derivative of testosterone. It is an androgen ester; specifically, it is the C17β 2-methylpropanoate<unk>  ester of testosterone.
Testosterone isobutyrate
Testosterone phenylacetate
Testosterone nicotinate
Testosterone hexahydrobenzoate
Estradiol butyrylacetate
Estradiol propoxyphenylpropionate
Estradiol dibutyrate
Testosterone cyclohexylpropionate