Caffeine Back Catalog number: 79397 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675248 Proquinazid, 100 µg/ml, Acetonitrile, 5ml Price on request 12137.16-100-ME Difenoxuron,100 µg/mL,MeOH,1mL, Price on request 679096 Glufosinate-ammonium, 10.0 µg/ml, Water, 10ml Price on request