1H-Imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine, 5-ethyl-1,3,8-trimethyl- 5-Ethyl-1,3,8-trimethyl-1H-imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine 89239-93-0 PD 112488