Product Detail Paclitaxel CAS：33069-62-4 Structural formula：C47H51NO14 Molecular Weight：853.90 Packing： Quality Standard：USP Items Standard Characteristics White crystalline powder Melting range 213℃ ~216℃（dec.） Specific rotation -48~-56? （c=1,methanol） Heavy metals <20ppm Residue on ignition <0.5% Loss on drying <1% Relating substance biggest single impurity<0.5%， t total impurity<1.0% Assay 97~102%