(S)-7-hydroxy-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic acid cas no:1246616-73-8

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Shanghai Twisun Bio-pharm Co., Ltd.

Tel:+86-21-37285116

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Shanghai Do Chemical Co.,Ltd

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Shanghai Forever Synthesis Co.,Ltd.

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Address: Nianjiabang Rd, Pudong, Shanghai