Heptachlor Back Catalog number: 79167 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 33241 Propylcyclohexane Price on request 81401 Azinphos methyl Price on request 2253.7-5K-ME Toluene-d8, 5000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2037-26-5 Price on request