1 3-dimethylpyrimidine-2 4 6(1h 3h 5h)-trione July 8, 2019 16 32 64 128 1 3 dimethylpyrimidine 2 4 6 1h 3h 5h )- trione 1 3-dimethyl-3 4 5 6-tetrahydro-2(1h)-pyrimidinone 1 3 7-trimethyl-3 4 5 7-tetrahydro-1h-purine-2 6-dione 1 4 dibromobutane 1 3 7-trimethyl-3 7-dihydro-1h-purine-2 6-dione
