4,4’-DDD Back Catalog number: X9054 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52021 Calibration Standard 1 Price on request 10248.13-100MG 2,4-Dihydroxybenzophenone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 131-56-6 Price on request 8366.6-50MG 3,4,5-Trichloroaniline, neat, Solvent-neat, Unit 50mg, # of units-1, Cas.no. 634-91-3 Price on request