4,4’-DDE Back Catalog number: 98848 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680355 Cefalexin monohydrate, 250mg Price on request 73578 2-Thiocyanomethylthiobenzothiazole Price on request 96865 FTRPH Window Defining Standard C8 - C40 Even Price on request