Adipic acid-d4 (Hexanedioic acid-d4) is the deuterium labeled Adipic acid (HY-W017522). Adipic acid (Hexanedioic acid) is an orally active compound with anti-HSV-1 activity. Adipic acid has low toxicity and can be used as a food additive and a gelling agent. Adipic acid can also be used in the synthesis of lubricants, artificial resins, plastics, etc[1][2].