10314-99-5
4-氯羰酰四氢-吡啶羧酸苄酯
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30672-46-9
哌啶-4-羧酸 (2-羟乙基)胺
73415-79-9
benzyl 4-((2-hydroxyethyl)carbamoyl)piperidine-1-carboxylate