17a-Ethinylestradiol, certified, 0.25g

Cimetidine sulphoxide dihydrochloride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 54237-72-8

Tm/Ts Mixture Tm – 0615,27 17alpha(H)-22,29,30-Trisnorhopane Ts – 2635,27 18alpha(H)-22,29,30-Trisnorneohopane With a spesific ratio between the two peaks based on a SIM spectra of ion m/z = 191

13C4-Fipronil, 100 µg/ml, Acetonitrile, 1ml