Naproxen, 250mg Back Catalog number: 673089 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 10105.10-50UG 8:2Mono-PAPS-d2, neat, Solvent-neat, Unit ca. 50 µg, # of units-1, Cas.no. Price on request 1693.16-500-IO 1,7-Dimethylphenanthrene, 500 µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 483-87-4 Price on request 51127 Aromatics Quantitative Internal Standard Price on request