Di-n-propyltin dichloride, 25mg

3,4,6,7,10,11-Hexachlorotridecane-11,12,13-13C3, 100µg/ml in IO, 1ml

Atrazine-2-hydroxy, 10.0 µg/ml, Methanol, 10ml

Metoprolol Tartrate, >98%, 5g