D3-(±)-Naproxen, 100 µg/ml, Methanol, 1ml Back Catalog number: 677719 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 3422.11-100-AN Imidan Price on request 94519 EPA Method 551.1 Standard Price on request 10404.4-K-ME O,O-Diethylhydrogenphosphate, 1000µg/ml in MeOH, 1ml Price on request