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 94978 Chloramine-T Price on request 3296.23-K-IO Methyl 7,10,13,16-docosatetraenoate (all-cis), 1000µg/mL in Isooctane, 1ml Price on request 79053 4,4’-Methoxychlor Price on request