1,3-Bis(4-nitrophenyl)urea, 50mg Back Catalog number: 680032 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 83563 2,4-DB Price on request 2127.12-10-IOX5 Arochlor 1248 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 12672-29-6 Price on request 79010 Ethylenediamine, 1000µg/ml in MeOH, 1ml Price on request