2,3-Dihydropyran

• CAT Number: R016941
• CAS Number: 110-87-2
• Molecular Formula: C5H8O
• Molecular Weight: 84.12
• Purity: ≥95%
• Synonyms: 3,4-Dihydro-2H-pyran; 3,4-Dihydro-1,2-pyran; Dihydro-pyran; 2,3-Dihydro-4H-pyran; 2,3-Dihydro-γ-pyran; 2H-3,4-Dihydropyran; 3,4-Dihydro-2H-pyran; 5,6-Dihydro-4H-pyran; Dihydro-2H-pyran; Dihydropyran; NSC 57860; NSC 73472; Δ2-Dihydropyran; DHP
• Storage: -20°C
• IUPAC Name: 3,4-dihydro-2H-pyran
• InChI: InChI=1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2
• InChIKey: BUDQDWGNQVEFAC-UHFFFAOYSA-N
• SMILES: C1CC=COC1

2,3-Dihydropyran  (Cat No.: R016941) is a six-membered heterocyclic compound containing five carbon atoms and one oxygen atom, with a double bond between the 2nd and 3rd carbon atoms. It is a colorless, flammable liquid with a mild, ether-like odor. In organic synthesis, 2,3-dihydropyran is primarily used as a protecting group for alcohols, forming tetrahydropyranyl (THP) ethers that are stable under basic conditions and easily removed under acidic conditions. Its reactivity and ease of use make it valuable in multistep synthetic strategies.