Top Quality Golden Product API 99.9% Osimertinib Mesylate Powder CAS NO.1421373-66-1 Appearance:Yellow Powder Purity:99.5%+ Total Impuriities≤0.5% Single Impurity≤0.1% Water≤0.5% Storage Condition: keep in seal, cool and dry place Package&Shipping: Package:Double PE Bag with Foil Bag or As required Delivery time:Stock available Port:Any port in China