1-ethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 的分子结构, CAS编号: 57712-57-9
1-ethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 的分子结构, CAS编号: 57712-57-91-ethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 的分子结构, CAS编号: 57712-57-9