A ketone of the general formula where R denotes a hydrocarbon group that comprises at least one C=O group, R1 denotes a linear or branched alkyl group having up to 6 carbon atoms, R2, R3, R4, R5, R6, and R7 mutually independently denote hydrogen, a halogen atom, NO 2, a linear or branched alkoxy group having up to 15 carbon atoms, or a linear or branched alkyl group having up to 15 carbon atoms, the residues R and R2 being selected so that the ketone of the general formula is a pro-fragrance for scent ketones selected from buccoxime, isojasmone, methyl beta-naphthyl ketone, musk indanone, Tonalid/Musk plus, alpha-damascone, beta-damascone, delta-damascone, gamma-damascone, damascenone, damarose, methyldihydrojasmonate, menthone, carvone, camphor, fenchone, alpha-ionone, beta-ionone, gamma-methyl (so-called) ionone, fleuramone, dihydrojasmone, cis-jasmone, methyl cedrenyl ketone or methyl cedrylone, acetophenone, methylacetophenone, para-methoxyacetophenone, methyl beta-naphthyl ketone, benzylacetone, benzophenone, para-hydroxyphenylbutanone, celery ketone or livescone, 6-isopropyldecahydro-2-naphthone, dimethyloctenone, frescomenthe, 4-(1-ethoxyvinyl)-3,3,5,5-tetramethylcyclohexanone, methylheptenone, 2-(2-(4-methyl-3-cyclohexen-1-yl)propyl)cyclopentanone, 1-(p-menthen-6 yl)-1-propanone, 4-(4-hydroxy-3-methoxyphenyl)-2-butanone, 2-acetyl-3,3-dimethylnorbornane, 6,7-dihydro-1,1,2,3,3-pentamethyl-4 indanone, 4-damascol, dulcinyl or cassione, gelsone, hexalone, isocyclemone E, methylcyclocitrone, methyl lavender ketone, orivone, para-tert- butylcyclohexanone, verdone, delphone, muscone, neobutenone, plicatone, veloutone, 2,4,4,7-tetramethyloct-6-en-3-one, tetrameran, or mixtures thereof. R denotes a hydrocarbon group that comprises at least one C=O group, R1 denotes a linear or branched alkyl group having up to 6 carbon atoms, R2, R3, R4, R5, R6, and R7 mutually independently denote hydrogen, a halogen atom, NO 2, a linear or branched alkoxy group having up to 15 carbon atoms, or a linear or branched alkyl group having up to 15 carbon atoms, the residues R and R2 being selected so that the ketone of the general formula is a pro-fragrance for scent ketones selected from buccoxime, isojasmone, methyl beta-naphthyl ketone, musk indanone, Tonalid/Musk plus, alpha-damascone, beta-damascone, delta-damascone, gamma-damascone, damascenone, damarose, methyldihydrojasmonate, menthone, carvone, camphor, fenchone, alpha-ionone, beta-ionone, gamma-methyl (so-called) ionone, fleuramone, dihydrojasmone, cis-jasmone, methyl cedrenyl ketone or methyl cedrylone, acetophenone, methylacetophenone, para-methoxyacetophenone, methyl beta-naphthyl ketone, benzylacetone, benzophenone, para-hydroxyphenylbutanone, celery ketone or livescone, 6-isopropyldecahydro-2-naphthone, dimethyloctenone, frescomenthe, 4-(1-ethoxyvinyl)-3,3,5,5-tetramethylcyclohexanone, methylheptenone, 2-(2-(4-methyl-3-cyclohexen-1-yl)propyl)cyclopentanone, 1-(p-menthen-6 yl)-1-propanone, 4-(4-hydroxy-3-methoxyphenyl)-2-butanone, 2-acetyl-3,3-dimethylnorbornane, 6,7-dihydro-1,1,2,3,3-pentamethyl-4 indanone, 4-damascol, dulcinyl or cassione, gelsone, hexalone, isocyclemone E, methylcyclocitrone, methyl lavender ketone, orivone, para-tert- butylcyclohexanone, verdone, delphone, muscone, neobutenone, plicatone, veloutone, 2,4,4,7-tetramethyloct-6-en-3-one, tetrameran, or mixtures thereof.