Nitrite (NO2-) as N Back Catalog number: 50627 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1900.18-100-T 1-Fluorochrysene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request M258815-1G Metformin Hydrochloride, 1g Price on request T412150 Thymine, 25g Price on request