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 71279 Esfenvalerate, 1000µg/ml in MeOH, 1ml Price on request 8701.12-10MG 2,2',6,6'-Tetrachlorobiphenyl, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 15968-05-5 Price on request 19200 Method 616 Standard Price on request