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(S)-4-Hydroxypiperidin-2-one: BD158580476014-92-395%; ￥410.0100mg

(R)-4-Hydroxypiperidin-2-one: BD359751051316-41-697%; ￥1482.01g

4-Hydroxy-2-piperidinone: BD41717476014-76-397%; ￥54.0250mg

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