Heptachlor epoxide Back Catalog number: 79168 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MET-11827C-250MG 1-(3,4-Dichlorophenyl)-3-methylurea, 250mg Price on request 2700.8-25MG Isocaffeine (1,3,9-Trimethylxanthine), neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 519-32-4 Price on request 92694 EPA Method 525.2 Standard Price on request