Trimethoprim, 100μg/mL in Acetonitrile, 1ml Back Catalog number: XA17875000AL Availability: In the manufacturer's stock Price on request - + Recommended 1560.8-K-ME n-Octane-d18, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 17252-77-6 Price on request 0017.18-100-T 6-Nitrochrysene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 7496-02-8 Price on request 83549 Heptaldehyde-DNPH Price on request