The benefit of S4 Andarine over anabolic steroids or testosterone is that there is no worry over non-skeletal muscle tissues experiencing androgen activity. Andarine S-4 is also used for various types of medical ailments.Chemical Name: ANDARINESynonyms: S4Cas No.: 401900-40-1Formula: C19H18F3N3O6Specification: 98%Appearance: White powder