What is Trenbolone Hexahydrobenzyl Carbonate? Trenbolone Hexahydrobenzyl Carbonate is a synthetic anabolic-androgenic steroid (AAS) that belongs to the nandrolone (19-nortestosterone) family. The addition of the hexahydrobenzyl carbonate ester slows the release of trenbolone into the bloodstream after injection, making it a long-acting formulation. Trenbolone has a very high affinity for...