 Polyester in the IUPAC Gold Book

Primary source: goldbook.iupac.org/terms/view/15278

Verified locator: Primary IUPAC definition, entry 15278: carboxylic ester linkages in the polymer backbone; note 4 excludes polymers containing only pendent ester groups. Source glossary: Pure and Applied Chemistry 81 (2009), p. 1154. Official indexed definition verified; direct reader returned 403.