Atrazine Mercapturate, 5mg

4-Ethylguaiacol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2785-89-9

Tartrazine, certified, 0.25g

4,4'-Sulfonylbis(2,6-dibromophenol), techn.