3,4,5-Trimethylphenethylamine (also known as TMePEA and 3,4,5-tris-desoxymescaline) is a chemical compound of the phenethylamine family. It is the analogue of mescaline (3,4,5-trimethoxyphenethylamine) in which all three methoxy groups on the phenyl ring have been replaced with methyl groups. The behavioral effects of TMePEA in cats have been studied. In contrast to mescaline, TMePEA and other analogues have rage-inducing effects in cats. The human psychoactivity of TMePEA is unknown. The compound was described in Alexander Shulgin's ' (2011).