https://doi.org/10.1351/goldbook.E02092
A @C01288@ that is an extremity of a @M03667@ or @O04286@. An end-group is attached to only one @C01288@ of a macromolecule or @O04286@.
Source:
PAC, 1996, 68, 2287. (Glossary of basic terms in polymer science (IUPAC Recommendations 1996)) on page 2294 [Terms] [Paper]