Color Back Catalog number: 50818 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9408.15-100-ME alpha-Hydroxymetoprolol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 56392-16-6 Price on request 35021 EPA Method 502/524 Volatile Standard Price on request 680274 D-Xylose, 250mg Price on request