3-methoxy-4,5-dihydro-1,2-oxazole

2-methyl-1,2-oxazolidin-3-one

2-(甲基硫代)-4,5-二氢-1H-咪唑氢溴酸

3,4,4-trimethylpentan-2-one

1-(4-氯苯基)-3,3-双甲基磺酰基丙酮