Paraxanthine, 25mg Back Catalog number: P192500-25MG Manufacturer: TORONTO RESEARCH CHEMICALS Availability: In the manufacturer's stock Price on request - + Recommended 682696 Isonicotinic acid, 1000mg Price on request EPA-1613ISS Internal Standard Spiking Solution, 1.2ml, nonane Price on request 3307.19-K-IO Methyl octadecadienoate (9,11 + 10,12 c+tr) , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request