Chlorobenzuron, 100mg

2',3',4',5'-Tetrachloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

Dicofol, 100µg/mL in Cyclohexane, 1ml

Roxithromycin, 100 µg/ml, Methanol, 1ml