4-Andro (also known as 4-Androsterone – 3b-hydroxy-androst-4-ene-17-one) is a precursor to 4-Androstenediol and 1-Androstenedione, which is a precursor to testosterone.
4-DHEA (4-Andro) (och bekannt als 4-Androsteron - 3b-Hydroxy-Androst-4-ene-17-Een) ass e Virleefer vum 4-Androstenediol a 1-Androstenedione, wat e Virleefer vum Testosteron ass.