Roflumilast, 10mg

1,3,6,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

Pyriprole, 100 µg/ml, Acetonitrile, 1ml

2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled)