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

N-Nitroso-4-(2-hydroxyethyl)-piperazin-2-one,1000 µg/mL,acetonitrile,1mL,

n-Heptyltin trichloride, 50mg

2,3,5,6-Tetrabromo-p-xylene, 1.2ml x 50ug/ml , toluene