2,4-D Back Catalog number: 83572 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79167 Heptachlor Price on request N-12234-1G Isobutyl alcohol, 1g Price on request M4PFHPA Perfluoro-n-[1,2,3,4-13C4]heptanoic acid, 1.2ml x 50ug/ml, methanol Price on request