4,4’-DDE Back Catalog number: 79041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2590.6-50-ME Perfluorohexanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 307-24-4 Price on request 71936 4-Methylcyclohexanone Price on request PFTEDA Perfluoro-n-tetradecanoic acid, 1.2ml x 50ug/ml, methanol Price on request