Difenzoquat methylsulfate Back Catalog number: 70649 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677335 Heptadecafluorooctanesulfonic acid potassium salt, Price on request C12965400 Direct Red 28, certified, 0.1g Price on request 683462 m-Phenetidine, 1000mg Price on request