Ponceau 4R (E 124), 1g Back Catalog number: IBPO004 Availability: In the manufacturer's stock Price on request - + Recommended 8749.12-50-IO 3,4'-Dibromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 83694-71-7 Price on request 73013 Tetrahydrothiophene Price on request 678382 4,4'-DDT, 100 µg/ml, Acetonitrile, 5ml Price on request