Carbonyl DNPH Derivative Mix, 100µg/ml in AcN, 1ml

2,2',3,3',4',5,6-Heptachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

D3-(±)-Naproxen, 100 µg/ml, Methanol, 1ml

Metoprolol, 1000µg/ml in MeOH, 1ml