4,4'-MDI, 1000mg Back Catalog number: 682730 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 673427 Prosulfocarb, 100 µg/ml, Acetonitrile, 5ml Price on request 58150 Tin (Sn) Price on request 0256.22-200-T Anthanthrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 191-26-4 Price on request