3H,5H-pyrimido[1,2-alpha]purin-6,10-dione + H2O2 => 3H-pyrimido[1,2-alpha]purin-10-one + O2 + H2O
3h,5h-pyrimido[1,2-alpha]purin-6,10-dione + h2o2 => 3h-pyrimido[1,2-alpha]purin-10-one + o2 + h2o
3H,5H-pyrimido[1,2-alpha]purin-6,10-dione + H2O2 => 3H-pyrimido[1,2-alpha]purin-10-one + O2 + H2O
3h,5h-pyrimido[1,2-alpha]purin-6,10-dione + h2o2 => 3h-pyrimido[1,2-alpha]purin-10-one + o2 + h2o