🌐EnglishEnglishDeutschFrançaisItalianoNederlandsPortuguêsРусскийفارسی中文日本語EntityQ421283· pop 19· linked from 13 articlesMeldrum's acidchemical compoundConnectionsketeneEntityoxygenEntityCategoriesChembox having GHS dataChemical articles with multiple compound IDsDioxanesECHA InfoCard ID from WikidataLactonesMultiple chemicals in an infobox that need indexingOrganic acids