4,4’-DDD Back Catalog number: 70099 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681212 Valeraldehyde, 1ml Price on request 673199 Aminocarb, 100 µg/ml, Acetonitrile, 5ml Price on request 677783 beta-Estradiol hemihydrate, 100 µg/ml, Methanol, Price on request