EPA Method 508 Pesticide Mix

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

2-Chloronaphthalene-d7

2,2’,3,3’,4,4’,5,5’-Octachlorobiphenyl (194)