Polyethyleneglycol mono-4-nonylphenyl ether (n=2)

1-Methyl-2-phenylbenzimidazole, neat, Solvent-neat, Unit 10MG, # of units-4, Cas.no. 2622-63-1

2,3,6-Trichlorotoluene, 100 µg/ml, Methanol, 5ml

Sulfamethazine-13C6, 1mg