Calibration Standard Mix 5 Back Catalog number: 52037 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79038 Pyrene Price on request 676329 3-Methoxy-DL-tyrosine, 10mg Price on request 11618.24-100-ME Spironolactone,100 µg/mL,MeOH,1mL, Price on request