Methoxetamine is chemically similar to ketamine. Some sources suggest it was initially synthesised by an underground chemist for treatment of chronic pain, but it has been present on the designer drug market since 2010 and use has increased in 2011.
Factsheet – Methoxetamine (PDF)
Please note that since 26 May 2016, Methoxetamine has been controlled under the Psychoactive Substances Act