Oxandrolone CAS No 53-39-4

In the 30 's, scientists found that anabolic steroids were good for skeletal muscle growth, and then bodybuilders and weightlifters began taking them, eventually developing a lot of sports to start taking anabolic steroids. Nowadays, steroids are widely used in sports, which seriously affects the results and impartiality of sports competitions. More than 100 anabolic steroids have been developed in the United States, most of which are illegal, smuggled to the United States, or developed by some pharmaceutical or secret laboratories.