Butralin, 100 µg/ml, Ethyl acetate, 5ml

3-Bromo-L-tyrosine, 1g

1,2,3,4,6,9-Hexachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

N-Ethyl-N-(2-hydroxyethyl)perfluorooctylsulphonamide,neat,neat,10mg,