4,4’-DDD Back Catalog number: 79017 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3057.30-5UG alpha alpha alpha (20R,23R,24S)-4 alpha,23,24-Trimethylcholestane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. 146276-33-7 Price on request ACQ-SE05-015 Ethanol standard in serum,0.5g/L,serum, 1.5mL Price on request 66105 2,3,3’,4,4’-Pentachlorobiphenyl (105) Price on request