2,2',4,4'-Tetrahydroxybenzophenone, 500mg Back Catalog number: 682235 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 8350.9 1-[2,4-Dinitrophenylhydrazone]pyruvaldehyde, Please inquire, Solvent-, Unit , # of units-, Cas.no. 57965-39-6 Price on request 91259 n-Hydrocarbon Standard (C6-C32), 2000µg/ml in MeCHl, 1ml Price on request 73152 Nonafluoro-1-butanesulfonate Price on request