2-乙基苯并恶唑

4,8-dibromo-2,6-diethyl-[1,3]oxazolo[5,4-f][1,3]benzoxazole

4-氨基-2-乙基喹唑啉

ethyl 2,3-dimethylpenta-3,4-dienoate

ethyl 3-(2-sulfanylphenyl)prop-2-enoate