Heptachlor Back Catalog number: 79167 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 1615.14-10MG 2-Methyldiphenylmethane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 713-36-0 Price on request 71820 Methanol-d3 Price on request 80612 EPA Method 8060 QC Check Solution Price on request