Functional fragrance precursor

A fragrance precursor compound comprising one or more of the compounds derived from the reaction of X—OH and an aldehyde or ketone, said fragrance precursor compounds being of the formula X—O—C(R)(R*)(R**) wherein R is a C6-24 alkyl group, a C6-24 aralkyl group or a C6-24 alkaryl group;

• R* is H or a C6-24 alkyl group, a C6-24 aralkyl group or a C6-24 alkaryl group;
• R** is O—H or O—X;
• O—X representing a moiety derived from X—OH, and wherein X—OH is a material containing at least one hydroxyl group chosen from surfactants containing at least one hydroxyl group, fabric softener materials containing at least one hydroxyl group, softener precursor ester amines containing at least one hydroxyl group, softener precursor amido amines containing at least one hydroxyl group, hair conditioners containing at least one hydroxyl group, skin conditioners containing at least one hydroxyl group, saccharides, and polymers containing at least one hydroxyl group;
• wherein X—OH is of the following structure:
• wherein R1 and R2, independently, represent C12 to C30 aliphatic hydrocarbon groups,
• R3 represents (CH2CH2O)pH;
• T represents NH;
• n is an integer from 1 to 5;
• m is an integer from 1 to 5 and
• p is an integer from 1 to 10.