The present invention relates to the field of perfume. More particularly, the invention relates to compounds comprising at least one β-thiocarbonyl or nitrile moiety capable of releasing an active molecule selected from α, β-unsaturated ketones, aldehydes or nitriles. The present invention also relates to the use of the above compounds for perfumery as well as the compound (I) of the present invention (wherein a) m represents an integer of 1 to 6; b) Pro represents a hydrogen atom or a fragrance α, β Represents a group capable of producing an unsaturated ketone, aldehyde or nitrile and is represented by formula (II) or (II ′), wherein the wavy line indicates the position of the bond between said Pro and sulfur atom S; and the Pro group Also relates to scented compositions or scented articles comprising at least one of formula (II) or (II ′).本発明は香料の分野に関する。更に詳細には、本発明は、α,β-不飽和ケトン、アルデヒド又はニトリルから選択される活性分子を遊離することが可能な少なくとも1つのβ-チオカルボニル又はニトリル部分を含む化合物に関する。本発明はまた、前記化合物を香料に用いる使用並びに本発明の化合物(I)(式中、a)mは1~6の整数を表し;b)Proは水素原子又は発香性α,β-不飽和ケトン、アルデヒド又はニトリルを生じ得る基を表し且つ式(II)又は(II’)によって表され、その際、波線は前記Proと硫黄原子Sの間の結合の位置を示し;且つPro基のうち少なくとも1つは式(II)又は(II’)のものである)を含む付香組成物又は着香物品にも関する。