2,4-Xylidine-d6, 10mg

2,4,5-Trichloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

1,2,4,6,7,9-Hexachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane

d4 C27 alpha alpha alpha (20R)-Cholestane