Naproxen, 250mg Back Catalog number: 673089 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 9657.12-100-IO 2,3',4',5',6-Pentachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74472-39-2 Price on request 2025.6-100-DC Pentachlorobenzene, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 608-93-5 Price on request 2489.18-500-ME Tricyclohexyltin chloride, 500µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3091-32-5 Price on request