Displaying 6 results of Allopregnanolone Stable Isotopes Allopregnanolone Stable Isotopes are synthetic versions of the naturally occurring steroid hormone, allopregnanolone. These isotopes are created by replacing specific atoms within the molecule with stable isotopes, allowing for more precise scientific studies. Allopregnanolone plays a role in the central nervous system and is being researched for its potential therapeutic uses in conditions such as depression, anxiety, and epilepsy.