Pentabromotoluene, 1.2ml x 50ug/ml , toluene

2,3,3',4,4',5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Theophylline-d6 (dimethyl-d6), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 11790-39-8

2,2',4,4',5,6'-Hexabromodiphenyl ether,50µg/ml,1ml