Methyl Salicylate-d 4 is the deuterium labeled Methyl Salicylate. Methyl Salicylate (Wintergreen oil) is a topical analgesic and anti-inflammatory agent. Also used as a pesticide, a denaturant, a fragrance ingredient, and a flavoring agent in food and tobacco products. A systemic acquired resistance (SAR) signal in tobacco. A topical nonsteroidal anti-inflammatory agent (NSAID). Methyl salicylate lactoside is a COX inhibitor.