Bromophos-ethyl, 100 µg/ml, Toluene, 1ml

(±)-Bisoprolol-d7 Hemifumarate (iso-propyl-d7)

3,3',5,5'-Tetrabromobisphenol-A, 50µg/ml in MeOH, 1,2ml

N-Phenyl-1,4-phenylenediamine