The present invention relates to novel cyclopropane derivatives represented by Formula I:

##STR00001##

wherein R represents a hydrocarbon group containing 1-20 carbon atoms or an ester containing 1-20 carbon atoms;

wherein R′ represents a C.sub.1-C.sub.6 acyclic carboxylic acid ester, a C.sub.4-C.sub.6 cyclic carboxylic acid ester or —OR″, and R″ is selected from the group consisting of H, a C.sub.1-C.sub.6 acyclic hydrocarbon group, a C.sub.3-C.sub.6 carbocyclic ring and a C.sub.4-C.sub.5 heterocyclic ring; and

wherein the composition is selected from the group consisting of a flavor composition and a fragrance composition.

The aspects presented herein provide fragrance compositions having an olfacive profile that changes with time, wherein the fragrance compositions comprise at least two contrasting perfume accords that provide an olfactory modulating effect, wherein the perfume formulation delivers a desirable scent with increased perceived intensity and improved longevity of perception.

The invention relates to 2-octylcyclopropyl-1-carboxylic acid, in particular in the form of one of the isomers thereof in isolated form or in the form of a mixture of at least two of said isomers. The invention further relates to a method for synthesizing 2-octylcyclopropyl-1-carboxylic acid or at least one of the isomers thereof. Finally, the invention relates to the use of 2-octylcyclopropyl-1-carboxylic acid or of one of said isomers in isolated form or of one of the mixtures of at least two of the isomers thereof, as a perfuming agent. The invention further relates to the compositions including 2-octylcyclopropyl-1-carboxylic acid or one of said isomers in isolated form or one of the mixtures of at least two of the isomers thereof, as a perfuming agent.

The invention relates to a malodor counteractancy or counteracting (MOC) method that resorts to the use of specific malodor counteracting (MOC) mixtures of fragrance ingredients. More particularly, the invention relates to new MOC compositions capable of neutralizing or masking in an efficient manner malodors of a large variety of such as body or as malodors, kitchen malodors, toilet and bathroom malodors, and tobacco malodor. The novel MOC compositions of the invention contain at least one nitrite material in combination with another fragrance material and can be used in any finished consumer products such as air fresheners, kitchen or toilet/bathroom cleaning or freshening products, textile treatment products and products for application on the human skin or hair, or on animal fur, litter containers or cages.

Pro-fragrances may have the formula (I) as disclosed herein. Compositions may include the pro-fragrances, such as a laundry product, a home care product, and an insect repellant. A method for preparing the compound of formula (I) are also disclosed. Such pro-fragrances increase the longlastingness of a fragrance, the stability of a fragrance, and the adhesion of a fragrance.

Disclosed is a use of a compound of formula (I), a composition of matter comprising a compound of formula (I) and a consumer product comprising a compound of formula (I). ##STR00001##

The present invention relates to personal care compositions comprising malodor reduction compositions and methods of making and using such personal care compositions. Such personal care compositions comprising the malodor control technologies disclosed herein provide malodor control without leaving an undesireable scent and when perfume is used to scent such compositions, such scent is not unduely altered by the malodor control technology.

A fragrance composition comprising a compound represented by Formula (1) as an active ingredient: ##STR00001## wherein, in Formula (1), R.sup.1 represents a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms.

The present invention relates to new classes of odorous oximes and their ketone intermediates (odorants) which are useful as fragrance or flavor materials in particular in providing cassis, catty, tropical, green, coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.

The present invention relates to new classes of odorous ketones (odorants) which are useful as fragrance or flavor materials in particular in providing coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.