Penthiopyrad, 10 µg/ml, Cyclohexane, 10ml

5-Chloro-2-(2,4-dichloro[13C6]phenoxy)[13C6]phenol, 1.2ml x 50ug/ml, methanol

Clopyralid (Lontrel), 1000µg/ml in Acetonitrile, 1ml

1,4-Naphthoquinone, 250mg