4,4’-DDD Back Catalog number: 79290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59112 Metals Mix Price on request 0485.16-200-T Benzo[b]naphtho[2,1-d]thiophene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 239-35-0 Price on request 59295 Anions Mix Price on request