Home›Browse›tetrolic acid🌐EnglishEnglishDeutschPolski中文日本語EntityQ30693372· pop 5· linked from 5 articlestetrolic acidSign in to saveAlso known as but-2-ynoic acid, 2-butynoic acidchemical compoundAvailable in 4 languagesDeutsch中文日本語via Wikidata sitelinks · CC0