2,6,7,8,9,10-Hexahydro-10-[(2-methylphenyl)methyl]-7-(phenylmethyl)-imidazo[1,2-a]pyrido[4,3-d]pyrimidin-5(3H)-one-d5 is the isotope labelled analog of 2,6,7,8,9,10-Hexahydro-10-[(2-methylphenyl)methyl]-7-(phenylmethyl)-imidazo[1,2-a]pyrido[4,3-d]pyrimidin-5(3H)-one. 2,6,7,8,9,10-Hexahydro-10-[(2-methylphenyl)methyl]-7-(phenylmethyl)-imidazo[1,2-a]pyrido[4,3-d]pyrimidin-5(3H)-one is a small molecule TRAIL gene induction by normal and tumor cells as an anticancer therapy.