Just Add Muscle said:One of the only ones that seems to aromatize is the P-plex compound witch gives big water gains.This is the active ingredient:17a-Methyl-etioallocholan-2-ene-17b-ol – 15 mg
It is chemically not possible for that compound to aromatize. Its A-ring will not allow for this without significant reorganization first, which does not seem likely to occur in the body. It may have inherent estrogenic or progestational activity though.