Prednisolone-21-acetate, 250mg

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

4-n-Butyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 147792-33-4

Decachlorobiphenyl, 100 µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 2051-24-3