4-Androstene : Commonly referred to as 4-DHEA. This compound does not have much anabolic activity as a standalone, but it converts to testosterone through a two step conversion process. Therefore, making it extremely effective for adding on solid mass. 4-Androstene first converts to androstemediol and androstendione and then to testosterone. Unfortunately, due to the two step conversion the likely hood that 4-DHEA will actually convert to testosterone is slim. 4-DHEA will likely convert to androstenedione which does aromatize. Therefore, estrogen related side effects may occur while on cycle.