2,4-Dimethylaniline, 100 µg/ml, Acetonitrile, 5m

3,5-Dinitrobenzoic acid, 100 µg/ml, Acetonitrile,

ISO 8165-1 Internal Control Stock Solution 1 1 Internal standard, 1000µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7]

Thyroxine-13C6, 1mg