甲基碘

dimethyl-3,10-tetrahydro-6,7,8,9-iso-alloxazine

1-methyl-1,3-diazinane-2,4,5,6-tetrone

N-甲基-1,2-苯二胺

3-methyl-6-(N-methylanilino)-5-nitro-1H-pyrimidine-2,4-dione