2-(cyanomethyl)prop-2-enyl ethyl carbonate

3-morpholin-4-yl-1,4-dihydroquinazolin-2-one

N-乙氧羰基alpha-甲基-L-缬氨酸

methyl 2-ethoxycarbonyloxybenzoate

ethyl (2-formyl-6-phenylmethoxyphenyl) carbonate