What is another word for open-chain?
Pronunciation: [ˈə͡ʊpənt͡ʃˈe͡ɪn] (IPA) 
Open-chain is a term usually used in organic chemistry to refer to a type of molecule that has a linear or branched structure. There are several synonyms for this word that may be used depending on the context. These synonyms include unbranched, acyclic, aliphatic, and non-cyclic. Unbranched refers to a molecule that has a straight chain without any branches, while acyclic implies a molecule that does not form a cyclic structure. In contrast, aliphatic denotes a hydrocarbon molecule that has only single bonds, and non-cyclic generally refers to any molecule that does not contain a ring structure. These synonyms are essential to identify the structural properties of molecules in various fields such as biochemistry and pharmacology.
