1-(diphenylmethyl)-3-(2-{[(1S)-2-hydroxy-1-(methoxycarbonyl)-ethyl]amino}-2-oxoethyl)-1H-benzimidazolium chloride
(R)-2-(hydroxymethyl)piperazine-1-carboxylic acid tert-butyl ester
(R)-tert-butyl4-benzyl-2-(hydroxymethyl)piperazine-1-carboxylate
(R)-4-(phenylmethyl)-2-piperazinemethanol
(S)-2-(hydroxymethyl)piperazine-1-carboxylic acid tert-butyl ester