Coumarin, certified, 0.25g

C28 Triaromatic sterane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 80382-33-8

4,4'-DDT (ring-13C12), 100ug/ml in n-Nonane, 1,2ml

Bisphenol C, 100mg