Metronidazole-hydroxy, 100 µg/ml, Methanol, 1ml

Pyruvic Acid-13C3 Sodium Salt, 5mg

Sodium bis(1H,1H,2H,2H-[1,2-13C2]perfluorodecyl)phosphate, 50µg/ml in MeOH, 1,2ml

2,2'-Dichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane