based on the product labeling i believe they use non IUPAC naming of the active chemical (really bizzare naming) , they name one of the chemicals as a cholestane..i believe this is used to mislead or protect from unwanted attention from FDA,,i do not know if this structure holds any merit because i have not figured it out myself....I have little interest in any/most of the prohormones/ prosteroids that are currently out there, post PH ban of 2004. It seems there is a big surge in "novelty products" in the past few months.