Allylprodine (Ro 2-7113) is an opioid analgesic. It is stereoselective, with one isomer being much more active. Allylprodine is included in Schedule I of the US Controlled Substances Act 1970 as a Narcotic with ACSCN 9602 and a 2014 annual aggregate manufacturing quota of 2 grammes.

Allylprodine:
https://drugs.ncats.io/drug/4343OEZ18O

It was discovered by Hoffman-La Roche in 1957 during research into the related drug pethidine. 23 times more potent than morphine