Naproxen, 100 µg/ml, Methanol, 1ml Back Catalog number: 680986 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 8397.9-100-ME Pinic acid, 100µg/mL, Solvent-Methanol, Unit 1mL, # of units-1, Cas.no. 473-73-4 Price on request 680615 Diethylene glycol dibenzoate, 250mg Price on request 677709 1-Methylnaphthalene, 100 µg/ml, Acetonitrile, 1m Price on request