4,4’-DDD Back Catalog number: 79290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683418 Ethyl perfluoro(2-methyl-3-oxahexanoate), 10mg Price on request 680997 Norflurazon-desmethyl, 100 µg/ml, Ethyl acetate, Price on request 674517 PSA-CaCl2Mix 6 Price on request