Theophylline Back Catalog number: 72031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11208.16-50-ME 1H,1H,2H,2H-Perfluoro-n-dodecyl methacrylate,50 µg/mL,MeOH,1mL, Price on request 92535 2-Chloronaphthalene Price on request DD-123-S 1,2,3-Trichlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request