Talk:Pentazocine

Isomerism is not expressed unequivocally
The illustrations are labelled as R and S isomers of pentazocine. In the text only (-) and (+) optical isomers are mentioned. It is not possible unambiguously bring together these isomers. — Preceding unsigned comment added by 2001:BB8:2002:2300:61EC:834C:9781:5CCC (talk) 08:28, 30 March 2017 (UTC)