Methoxychlor (13C12), 100µg/ml in Nonane, 1,2ml

1,2-Dibromo-7,8-dichlorodibenzofuran, 1.2ml x 50ug/ml, toluene

3,3’-Dichlorobiphenyl (11)

8-Bromo-2,3-dichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene