Nitrofurantoin 13C3, 5mg

Disulfiram, 250mg

Cycloxydim Metabolite BH 517-5-OH-TGSO2, 100 µg/ml

Sodium 1H,1H,2H,2H-perfluoro-1-[1,2-13C2]-octane sulfonate (6:2), 50µg/ml in MeOH, 1,2ml