Caffeine Back Catalog number: 98416 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2789.12-100-IO 4,4'-Thiodianiline, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 139-65-1 Price on request 1931.6-1ML Pentafluoropropionic anhydride, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 356-42-3 Price on request 675631 Metconazole, 100 µg/ml, Ethyl acetate, 5ml Price on request