D5-6PPD-quinone, 100µg/ml in Acetonitrile, 1ml Back Catalog number: 688151 Availability: In the manufacturer's stock Price on request - + Recommended 8776.13-K-ME Phenylparaben, see "Parabens", 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 17696-62-7 Price on request SC-251527 1-Naphthalenesulfonic acid, 25g Price on request S-4353-K-5AC ISO 8165-1 Internal Control Stock Solution 1 1 Internal standard, 1000µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7] Price on request