13C3-Caffeine, 10mg Back Catalog number: 680424 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 9944.28-50-IO C28 1-Methyl triaromatic sterane + C28 Triaromatic sterane (0856.28), 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 80382-31-6 Price on request 97788 Ethyl-t-butyl ether Price on request 92866 Volatile Standard Price on request