4,4’-DDD Back Catalog number: X9054 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83540 Benzaldehyde-DNPH Price on request 73458 1,2-Dihydronaphthalene Price on request 0958.9-K-CY 2-Methyloctane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 3221-61-2 Price on request