The act contains several references to "derivatives" of compounds but the extent of this term is not fully clarified. Where unspecified it is thought to indicate derivatives which can be made from the specified compound in a single synthetic step, although such a definition would indicate that alkyllysergamide analogues would be uncontrolled. Where the derivatives are specified to be "structural derivatives" there is precedent that the statute applies whenever the structure could be converted to the specified derivatives in any number of synthetic steps. 
Trenbolone is non-estrogenic steroid, and is considerably more anabolic and androgenic than nandrolone on a milligram for milligram basis. In appearance, it is much more commonly compared to a stronger androgen such as Drostanolone, than it is to nandrolone. It is also estimated to display about three times more androgenic potency than testosterone, making it one of the strongest injectable anabolic steroids ever commercially manufactured. This steroid is highly valued for its ability to increase muscle hardness, definition, and raw strength, without unwanted water retention and fat mass gains.