L-Azetidine-2-carboxylic acid,(S)-(-)-2-羧基環(huán)丁胺,20628-07-3,2'-METHOXY-5'-METHYLACETOPHENONE,1-(2-甲氧基-5-甲基苯基)乙酮,297141-07-2,(2,2,2-TRICHLORO-1-(3-O-TOLYL-THIOUREIDO)-ETHYL)-CARBAMIC ACID ETHYL ESTER,," />