Caffeine Back Catalog number: 79397 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3620.12-K-IO 3,3'-Difluorodiphenyl ether, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1800-48-2 Price on request PCB-ST-A Native PCB Stock Solution , 1.2ml , nonane Price on request 2487.8-1G Mono-n-octyltin trichloride, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 3091-25-6 Price on request