Diethyl stilbestrol

Tramadol-d6 hydrochloride, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no.

Methoxychlor-d6 (dimethoxy-d6),100 µg/mL,MeOH,1mL

4.4'-DDE (13C12), 100µg/ml in n-Nonane, 1,2ml