Penta-2,4-dienoic acid

• CAT Number: L045088
• CAS Number: 626-99-3
• Molecular Formula: C5H6O2
• Molecular Weight: 98.11
• Purity: ≥95%
• IUPAC Name: (2E)-penta-2,4-dienoic acid
• InChI: InChI=1S/C5H6O2/c1-2-3-4-5(6)7/h2-4H,1H2,(H,6,7)/b4-3+
• InChIKey: SDVVLIIVFBKBMG-ONEGZZNKSA-N
• SMILES: C=C/C=C/C(=O)O

Penta-2,4-dienoic acid(CAT: L045088), also known as sorbic acid, is an unsaturated six-carbon carboxylic acid featuring conjugated double bonds at the 2 and 4 positions. This conjugated diene structure imparts both chemical reactivity and biological significance. It is widely used as a preservative in food, cosmetics, and pharmaceuticals due to its ability to inhibit the growth of molds, yeasts, and some bacteria. In organic synthesis, it serves as a key intermediate for preparing polymers, plasticizers, and specialty chemicals. Its reactive double bonds also make it suitable for Diels–Alder reactions and functional derivatization in developing novel materials and bioactive compounds.