摘要：

An optical active pro accords conjugated compound having the formula: the first aspect of the present invention: [Formula 1] X is a heteroatom selected from oxygen, nitrogen and sulfur;; R and R has a photo-labile unit that can release the pro-accords units when exposed to electromagnetic radiation is [PHOTO] wherein Considering in a lump is a moiety comprising a ketone fragrance raw material or fragrance aldehyde, R contains a thio compound fragrance raw material alcohols, or amines.

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