Metronidazole CAS No.:443-48-1 Quality standard:CP2005/BP2000/USP26 White or off white crystalline powder. Packing: 25kg/fiber drum ,or 25kg/carton,or according to customers?requirement. Certificate of Analysis: If needed, please fell free to contact us We look forward to receive yr Inquiries with Qty required , Destination , Mode of Shipment (Air /Sea ) Pls feel free to send us inquires as per yr requirments. Any other products interested by you are on request . we will try our best to source those materials at our competitive prices & good quality.