Sodium Phenylbutyrate POWDER, 250 grams bottle, Rx Only, Sigmapharm Laboratories, LLC Bensalem, PA 19020 NDC 42794-086-14 UPC Code# 3 42794 086 14 4
Failed Impurities Specifications: Out of Specification impurity results obtained during routine testing.
Disttibuted Nationwide in the USA.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0766-2021