4-androstenedione

4-Androstenedione, also known as adrenosterone or 11-oxo-androstenedione (CAS 382-45-6, molecular formula C19H24O3, molecular weight 300.39), is offered at pharmaceutical (medicine) grade by Beijing Global Biologicals Co., Ltd., which distributes rather than manufactures the product. It appears as a white powder with a melting point of 219-222°C; paid samples are available, and it is sold across North America, Central/South America, Europe, Asia and Africa.