EPA Method 1625 Semi-Volatile Standard

Chloride 20 µg/mL (Cl-)

N-Phenylurea, 500mg

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