benzyl 5-oxo-1,3-oxazolidine-3-carboxylate

N,N'-bis-benzyloxycarbonyl-N,N'-methanediyl-bis-glycine

对甲苯磺酸盐

1,3,5-trimethyl-2-(4-methylphenyl)sulfonylbenzene

1-(4-bromophenyl)sulfonyl-4-methylbenzene