2,4-DB Back Catalog number: 83563 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1559.7-1G n-Heptane-d16, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 33838-52-7 Price on request DFP-LCS-B20 Mass-Labelled PCDDs/PCDFs/PCBs Solution/Mixture, 1.2ml, nonane Price on request N545450 N-Nitroso-L-proline, 10mg Price on request