Pyran derivatives

Pyran derivatives are based on a six-membered unsaturated oxygen heterocycle with five carbon atoms and one oxygen atom. The 2H-pyran and 4H-pyran forms differ in double-bond arrangement. Tetrahydropyrans and pyranones have different saturation or oxidation states and must be identified separately.

Defined pyrans serve as building blocks in synthetic chemistry; individual members are also studied in medicinal or materials research. Such evidence applies only to the compound tested. Verify the full name, CAS number, formula, 2H or 4H designation, saturation, carbonyl position and stereochemistry. For an unlisted target, provide an exact structure or identifier with your custom-synthesis enquiry.