beta-Endosulfan, 100 µg/ml, Ethyl acetate, 5ml

Mevinphos, 100 µg/ml, Acetonitrile, 1ml

Benzoic acid-benzyl ester, certified, 0.5g

Naltrexone hydrochloride, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16676-29-2