1,2-Dibromo-4-(1,2-dibromoethyl)cyclohexane, 100 µ

2,2,3,4,5-Pentachlorobiphenyl (BZ-90)

alpha alpha alpha (20R)-Cholestane, 100µg/mLin Isooctane, 1ml

1-Cyclohexene-1,2-dicarboxylic anhydride, 250mg