Hexavalent Chromium (Cr +6)

Serotonin hydrochloride, 100mg

Cimetidine guanidine derivative (N-Methyl-N'-[2-[[(5-methyl-H-imidazol-4-yl)-methyl]-thiol]-ethyl]-guanidine dihydrochloride), neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 59660-24-1

4-Ethylthiophenol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 4946-13-8