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

2-Ethylhexyl-d17 2,3,4,5-tetrabromo[13C6]benzoate, 1.2ml x 50ug/ml, toluene

2,4-DB

Quinclorac, 100 µg/ml, Acetonitrile, 5ml