ethyl 4-cyano-4H-quinazoline-3-carboxylate

(4-chloro-2-methylphenyl) ethyl carbonate

ethyl N-[2-(dimethylamino)ethyl]-N-phenylcarbamate

3-ethyl-2H-pyrazolo[3,4-e][1,3]oxazine-5,7-dione

5-乙基-3,5-二甲基苯