Toxaphene Mix 1, 1 ng/µl, 1ml

2,2',3,3',4,5,5',6,6'-Nonachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

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

Verapamil-d7 Hydrochloride, 5mg