SEARCH Articles Figures Tables Ferulic acid, vanillin flavors Reagent vanillin-phosphoric acid Reagent vanillin-sulfuric acid Vanillic acid preparation from vanillin Vanillic acid, vanillin Vanillin ferulic acid Vanillin ferulic acid degradation Vanillin formation from ferulic acid Vanillin mandelic acid Vanillin-phosphoric acid Vanilline Vanilline phosphoric acid