buta-1,3-diene Cas No|Cas Number|CAS Registry Number:25339-57-5 .Chemical Name|Molecular Name:buta-1,3-diene Formulanor:C4H6 Synonyms: Molecular Weight:54.0904 Tags: 25339-57-5, 3-diene, Buta-1, C4H6, CAS 25339-57-5, CAS NO 25339-57-5, CAS Number 25339-57-5 More cas number lookup on molecularinfo.com which has the Cas Number/CAS Registry Number database. 赞赏/donate