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(S)-3-Amino-1-methylpiperidin-2-one hydrochloride: BD233126956109-56-195%; ￥7112.01g

(S)-Ethyl 2-(3-amino-2-oxopiperidin-1-yl)acetate hydrochloride: BD224375937057-79-995%; ￥3550.01g

3-Aminopiperidin-2-one: BD1620551892-22-498%; ￥179.01g

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