Synonyms: 5H-Imidazo[2,1-i]purin-5-one,8-ethyl-2-(hexahydro-2,5-methanopentalen-3a(1H)-yl)-1,4,7,8-tetrahydro-4-propyl-,(8R)- (9CI); 5H-Imidazo[2,1-i]purin-5-one,8-ethyl-2-(hexahydro-2,5-methanopentalen-3a(1H)-yl)-1,4,7,8-tetrahydro-4-propyl-,(R)-; 2,5-Methanopentalene, 5H-imidazo[2,1-i]purin-5-one deriv.; KF 20274