Anions Mix Back Catalog number: 59890 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8484.15-50MG Metoprolol (free base),neat,neat,50mg, Price on request 51043 TX 1005 Surrogate Standard Price on request 1515.14-K-IO 2,4-Di-sec-butylphenol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1849-18-9 Price on request