Isoaxben, , Solvent-, Unit , # of units-, Cas.no. 82558-50-7

3,4-Dichloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

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

N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol