beta-Endosulfan-d4 (1,1,5,5-d4),100 µg/mL,n-nonane,1mL,

Sodium DL-3-hydroxybutyrate, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 150-83-4

Metformin-d6 hydrochloride (dimethyl-d6),100 µg/mL,MeOH,1mL,

Benzo(e)pyrene,1000µg/ml in methylene chloride,1ml