d2 C27 alpha alpha alpha (20R)-Cholestane, 10µg/mL in Isooctane, 1ml

2,3,3',4',5,6-Hexachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

Trifluoromethanesulfonic acid, 50µg/ml in MeOH, 5ml

1-(3-Chloro-4-methylphenyl)-3-methylurea, 100µg/ml in Acetonitrile, 5ml