Metformin hydrochloride

2,3',4,4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

4,5-Dichloro-2-(2,4-dichlorophenoxy)anisole (4-Chloro-methoxytriclosan), 1.2ml x 50ug/ml, nonane

Amidosulfuron, 100 µg/ml, Acetonitrile, 5ml