4,4’-DDD Back Catalog number: 70099 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended ACQ-SE40-115 Ethanol standard in serum,4.0g/L,serum, 1.5mL Price on request 2723.16-10MG 1,3,4-d3-2-Isopropylthioxanthone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request 2141.6-150K-RF tert-Butyl ethyl ether + blank RFA, 15Wt%, Solvent-neat, Unit 10mL, # of units-2+1, Cas.no. 637-92-3 Price on request