13C3-Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 681491 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 97346 2,6-Dimethylaniline Price on request 12117.18-K-ME Clofibrate,1000 µg/mL,MeOH,1mL, Price on request 71060 Picloram methyl derivative Price on request