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Product details are as follows:   Product Name Meropenem Crude Molecular Formula C17H25N3O5S·3H2O  Residue on ignition ≤0.5 PH 4.0~6.0 Specific optical rotation -17°~ -25° Water 11.0% ~ 13.5% Heavy Metal ≤40ppm Acetonitrile ≤0.041% Acetone ≤1.0% Tetrahydrofuran ≤1.0%   This product is non-dangerous. Our other products are listed as follows