I belive methoxetamine could be considered an anesthetic and it was invented expressly for the purpose of mimicing the effects of ketamine at a lower dosage threshold to avoid the ketamine associated bladder damage.

I believe the chemist was an amputee as a result of a terrorist attack and spent his life wirking to develop an analgesic as effective as ketamine for nerve pain without the side affects.

mxe was a very beloved "researcg chemical" (read:designer drug) prior to like 2016 when supply dried up.