Estriol, 10 µg/ml, Acetonitrile, 10ml

Perfluorohexane sulfonic acid, potassium salt,neat,neat,1g,

2,2',3,3',4,4',5,5',6-Nonabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, toluene

2,3,4,6-Tetrachloroanisole