4,4’-DDD Back Catalog number: 79290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679524 13C6-Sulfaquinoxaline, 10mg Price on request 83604 Quinclorac Price on request 2843.7-50-ME 1H,1H-Perfluoroheptan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 375-82-6 Price on request