Theophylline, 100µg/ml in MeOH, 5ml Back Catalog number: 18000-1150-100ME5 Manufacturer: NEOCHEMA Availability: In the manufacturer's stock Price on request - + Recommended 32571 Dichlorodifluoromethane Price on request 1494.22-K-IO 2-Methylheneicosane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1560-82-3 Price on request S-4621-ASS-10DC Custom Mix of perdeuterated PAHs and native PCBs (II), >99% purity 0978.10 Naphthalene-d8 5000µg/mL 1524.12 Acenaphthene-d10 5000µg/mL 0389.14 Phenanthrene-d10 5000µg/mL 1337.16 Fluoranthene-d10 5000µg/mL 1088.20 Benzo[a]pyrene-d12 Price on request