Heptachlor Back Catalog number: X9111 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2198.11-100-ME 2-Methyl-4-nitronaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 13615-38-8 Price on request 72488 Phosphoric acid Price on request 8539.18-250MG n-Pentyl iso-pentyl phthalate (n-Pentyl 3-methlybutyl phthalate), neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 776297-69-9 Price on request