Parathion-ethyl, 100 µg/ml, Ethyl acetate, 5ml

Metoprolol-d7 hydrochloride (isopropyl-d7),1000 µg base/mL,MeOH,1mL

1,2,5,6,9,10-Hexabromocyclododecane, 100 µg/ml, C

2,4-Dimethylaniline