EPA 1620 Standard 1

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

Oxamyl, 100mg

2-Isopropylphenyl diphenyl phosphate, 1.2ml x 50ug/ml, toluene