ethyl (2E)-4-ethoxycarbonyl-5-ethoxy-2,4-pentadienoate

(4,5-dichloro-2-nitrophenyl)hydrazine

ethyl 3-methyl-2,4-dioxo-1,5-dihydropyrrolo[3,2-d]pyrimidine-7-carboxylate

ethyl 3-(2,6-dichlorophenyl)prop-2-enoate

戊乙氧基砷烷