Share this post on: Valproic acid (sodium salt) Radioactivity: 10 µCi Storage: -20°C or lower Appearance: White powder Contents: Each vial contains 10 µCi of Iodine-125 labeled peptide. Disclaimer: This package conforms to the 49 CFR173.421 for expected radioactive material limited quantity, N.O.S. UN2910. j.urology.2011.07.1413