We offer Natural Paclitaxel & Crude Paclitaxel. Paclitaxel(natural) CAS No:33069-62-4 Molecular formula:C47H51NO14 Molecular weight:853.89 Source:extract from Taxus chinensis var. Mairei Appearance:white crystalline powder Specification:99.5% Packing: aluminum foil bag. Please feel free to contact us.