Polyene

In organic chemistry, polyenes are polyunsaturated organic compounds that contain multiple carbon–carbon double bonds (C=C). Some sources consider dienes to be polyenes, whereas others require polyenes to contain at least three carbon–carbon double bonds.

Conjugated polyenes contain a conjugated system of alternating single and double carbon–carbon bonds, with characteristic optical properties.

The following polyenes are used as antimycotics for humans: amphotericin B, nystatin, candicidin, pimaricin, methyl partricin, and trichomycin.

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