SEARCH Articles Figures Tables 3-formyl-pyrrole Formylic acid Funkioside Ganoderals Ganoderic acid Pyrrole 2-carboxylate Pyrrole acidity Pyrrole, carboxylation Pyrrole-3-carboxylic acid, acidity Pyrrole-carboxylic acids Pyrroles 3- carboxylic acids Pyrroles carboxylation Pyrroles, formylation Pyrrolic acids