QC Standard 1 Back Catalog number: 52084 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9408.15-5MG alpha-Hydroxymetoprolol, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 56392-16-6 Price on request 676720 L-Tryptophan, 100mg Price on request 672939 Trifluralin, 250mg Price on request