甘氨酸-2-13C乙基酯盐酸盐

2,4-dibromo-1,5-diphenylpenta-1,4-dien-3-one

Ethyl 4-bromofuran-2-carboxylate

ethyl 9H-fluorene-2-carboxylate

5-氧代-4,5-二氢-3-呋喃羧酸