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

Dinoseb-PFB derivative

1,2,3,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Ethylcyclohexane