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 2995.9-K-CY 3,4-Dimethylheptane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 922-28-1 Price on request 9843.2-10ML Glyoxal, 40% solution in water, neat, Solvent-neat, Unit 10mL, # of units-1, Cas.no. 107-22-2 Price on request 2517.8-500MG Caffeine, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 58-08-2 Price on request