Heptachlor Back Catalog number: 70192 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677591 Methylmalonic acid, 250mg Price on request 2376.10-K-IP 1-Naphthol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 90-15-3 Price on request 83556 Methyl isopropyl ketone-DNPH Price on request