Perfluoro-n-butanoic acid, 50µg/ml in MeOH, 1,2ml

d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 1ml

d3(ringA) Isoadiantane; ca. 20% d2, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

1,1,2,2-Tetrachloroethane