4-isobutyl-2-trifluoromethyl-4H-oxazol-5-one

1-氨基-2,2-二甲基环丙烷羧酸

3-isopropyl-oxirane-2,2-dicarboxylic acid diethyl ester

pyruvic acid N,N-dimethylhydrazone

2-hydroxy-3-propan-2-ylbutanedioic acid