17.2.2: Furanose Last updated Aug 9, 2023 Save as PDF 17.2.1: Fructose 17.2.3: Galactose Page ID451821 ( \newcommand{\kernel}{\mathrm{null}\,}\) If the molecule of the cyclic form of a monosaccharide has an oxygen-containing five-membered ring, the compound is called a furanose e.g. two of the four cyclic forms of D-fructose. The ring in a furanose is called the furanose ring. Contributors and Attributions Gamini Gunawardena from the OChemPal site (Utah Valley University)