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            1. Huaian Yishu Technology Co., Ltd.Huaian Yishu Technology Co., Ltd.
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              3-[[[(2S,4S)-4-Mercapto-1-(4-nitrobenzyloxy)carbonyl-2-pyrrolidinyl
              Product name: 3-[[[(2S,4S)-4-Mercapto-1-(4-nitrobenzyloxy)carbonyl-2-pyrrolidinyl]carbonyl]amino]benzoic acid
              CAS NO.: 202467-69-4
              Molecular formula: C20H19N3O7S
              Molecular weight: 445.45
              Appearance: White crystalline powder
              Content: ≥99%
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