Levulinic acid, 250mg

4-Methyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7372-88-5

D5-Propachlor, 100 µg/ml, Acetonitrile, 1ml

Ponceau 3R