2-Mercaptoethanol, 1000mg

(±)-Vanillomandelic acid-d3,100 µg/mL,MeOH,1mL,

2,3,4,5-Tetrachlorophenol, 100 µg/ml, Methanol,

O,O-Diethylthiophosphate-13C2, sodium salt, 100µg/ml in MeOH, 1ml