Tributyl[(tert-butyldimethylsilyl)oxy]methylstannane is an intermediate in synthesizing Hydroxytolyl Mephedrone Hydrochloride, which is a metabolite of Mephedrone Hydrochloride (M224200). It is a stimulant drug related to cathinone and methcathinone. The effects of Mephedrone are reportedly comparable to those of similar drugs such as MDMA and methylone.