(13C12)Endrin, 1.2mL x 100ug/mL, nonane

4-Methyl-1H-benzotriazole, 100µg/ml in AL, 5ml

d4 Pregnane, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 205529-77-7

n-Hexadecane-d34