Monocrotophos, 100 µg/ml, Acetonitrile, 5ml

2,3,3',4,4',5,5'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Budesonide, 100µg/mL in Acetonitrile, 1ml

Thianaphthene