Multiple choice The core of pyranose sugars consists of pivaloyloxymethyl silyl ethers tetrahydropyran trichloroethyl chloroformate Reveal answer Fill a bubble to check yourself C Correct answer Explanation Tetrahydropyran is the organic compound consisting of a saturated six-membered ring containing five carbon atoms and one oxygen atom. The tetrahydropyran ring system is the core of pyranose sugars.