Superdrol CAS 3381-88-2 for Muscle BuildingQuick DetailCAS Registry Number: 3381-88-2Assay: 97%Molecular Formula: C21H34O2Molecular Weight: 318.4935Appearance: White or white crystalline powderSuperdrol is an anabolic substance, meaning it promotes protein synthesis, and thus muscle strength. When muscles become stronger, they grow. Ultimately, Superdrol users experience large gains in muscle mass because their muscles become much stronger. Another advantage to using Superdrol is that it does not turn into estrogen. Many prohormones available start out as a testosterone-like substance in the body, but then eventually turn into estrogen through a process called aromatization. Estrogen causes decreased strength, muscle loss and fat gain. Thus, it is a promoter of the exact opposite traits someone who is taking Superdrol would want. These characteristics arise after one stops taking the compound. With Superdrol, however, the aromatization process never starts. The compound does not turn into estrogen in the body, meaning much of the muscle gain and fat loss one experienced while taking it will remain after dosing concludes.