1)Docetaxel Product Name: Docetaxel Chemical Name: N-debenzoyl-N-tert-butoxycarbonyl-10-deacetyl taxol; Taxotere Chemical Formula: C43H53NO14 CAS NO.: 114977-28-5 Standard: USP Appearance: White to off-white crystalline powder Assay: 98.0 % - 102.0% 2) Paclitaxel CAS 33069-62-4 Structural formula C47H51NO14 Molecular Weight 853.90 Quality Standard USP Items Standard Characteristics White crystalline powder Heavy metals <20ppm Residue on ignition <0.5% Loss on drying <1% Relating substance biggest single impurity<0.5% Total impurity<1.0% Assay 97~102%