1,3-Dimethylnaphthalene, 10mg Back Catalog number: H-198N Availability: In the manufacturer's stock Price on request - + Recommended 8865.9-K-IO 2-Methylquinoxaline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request 27013 EPA Method 8260B - Purgeable Internal Std Price on request 682270 Paraxanthine, 50mg Price on request