Descholoroketamine is a chiral molecule and is commonly made as a racemate. Des- is often a prefix used in chemistry to denote the absence of the functional group (in this case "chloro") hence deschloroketamine is named for lacking a chlorine substitution on its phenyl ring, which is found in ketamine. https://o-pcehcl19246.tinyblogging.com/the-5-second-trick-for-o-pce-hcl-70884522