Endosulfan sulfate (13C9), 100µg/mL in Nonane, 1,2

4-Isobutylbenzoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 38861-88-0

Bisphenol A-d16, 100µg/ml in Acetonitrile, 5ml

4-Isobutylbenzoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 38861-88-0