methyl (2E)-2-tritylsulfanyliminopropanoate

methyl 2-hydroxy-2-(3-methyl-1H-indol-2-yl)propanoate

methyl 3-methyl-1,1-dioxo-2,1λ⁶-benzoxathiole-3-carboxylate

methyl 2-hydroxy-(2-indolyl)propionate

2-氨基-3,4-噻吩羧酸-3-乙基-4-甲酯