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 9324.33-5UG (22RS)-30-Trishomohop-17(21)-ene, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. Price on request 40048 EPA method 633 Analytes Price on request T791375 4-(Trifluoromethyl)nicotinoyl Glycine, 250mg Price on request