2-氧代-2-(1H-吡咯并[3,2-c]吡啶-3-基)乙酸乙酯

1,3-bis(4-chlorophenyl)propan-2-one

ethyl 2-(4-iodoanilino)-2-oxoacetate

ethyl 2-(3-chloro-4-fluoroanilino)-2-oxoacetate

2-O-(2,2-dichloroethenyl) 1-O-ethyl oxalate