Cyclotriol
CHEMICAL COMPOUND
Cycloestriol; ZK-136295; ZK136295; ZK 136295; ZK-136,295; ZK 136,295; 14α,17α-ethanoestriol; 14α,17α-Ethanoestriol; 14,17-Ethanoestriol; 14,17-ethanoestriol
Cyclotriol (developmental code name ZK-136295; also known as 14α,17α-ethanoestriol) is a synthetic estrogen which was studied in the 1990s and was never marketed. It is a derivative of estriol with a bridge between the C14α and C17α positions.