2,2',4,5',6-Pentachlorobiphenyl (103)

4-Methoxy-2',3,5,5'-tetrachlorobiphenyl, 100µg/ml in IO, 1ml

Bisoprolol Fumarate, 1.0mg/ml in MeOH (as free base), 1ml

1,4-Difluorobenzene