N-甲基脲

1-butyl-5-(dimethylamino)-3,6-dimethylpyrimidine-2,4-dione

1,3,4-三甲基尿嘧啶

1-(3-hydroxypropyl)-3,6-dimethylpyrimidine-2,4-dione

1,3-二甲基-1H-吡咯并[3,2-d]嘧啶-2,4(3H,5H)-二酮