4,4'-DDD, 250mg Back Catalog number: 677528 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 1554.25-K-IOX5 n-Pentacosane-d52, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 121578-13-0 Price on request H669500 Homovanillic Acid, 50mg Price on request 675716 Chlormephos, 100 µg/ml, Ethyl acetate, 5ml Price on request