Cleanup Standard Spiking Solution, 1.2ml, nonane Back Catalog number: EPA-1613CSS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 2549.9-100MG N-(4-Hydroxyphenyl)-propionamide, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1693-37-4 Price on request 682270 Paraxanthine, 50mg Price on request 0848.22-100-IO 20-Methyl-5 alpha(H)-pregnane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5737-19-9 Price on request