Paraxanthine, 50mg Back Catalog number: 682270 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 11007 Semi-Volatiles - PAH Standard Price on request 65270 Fermentation Standard, in water, 1ml Price on request 682030 D3-Sulfamethoxypyridazine, 10.0 µg/ml, Methanol, Price on request