Pyran as floral odorant

A perfuming composition comprising

• a composition of matter, comprising:
• 1) at least 70% of at least a compound of formula
• in the form of any one of its stereoisomers or a mixture thereof, and wherein R represents
• a hydrogen atom and the dotted line represents a carbon-carbon single or double bond;
• or
• a CH2 group bonded with C4 and C5 and the dotted line represents a carbon-carbon single bond;
• 2) at most 30% of a compound of formula
• in the form of any one of its stereoisomers or a mixture thereof, and wherein R represents
• a hydrogen atom and the dotted line represents a carbon-carbon single or double bond;
• or
• a CH2 group bonded with C4 and C5 and the dotted line represents a carbon-carbon single bond;
• and
• wherein the percentages are w/w percentages relative to the total weight of the composition;
• ii) at least one ingredient selected from the group consisting of a perfumery carrier and a perfumery base;
• and
• iii) optionally at least one perfumery adjuvant.

A method to confer, enhance, improve or modify the odor properties of a perfuming composition or of a perfumed article, which method comprises adding to said composition or article an effective amount of a perfuming ingredient of a composition of matter comprising:

• 1) at least 70% of a compound of formula
• in the form of any one of its stereoisomers or a mixture thereof, and wherein R represents
• a hydrogen atom and the dotted line represents a carbon-carbon single or double bond;
• or
• a CH2 group bonded with C4 and C5 and the dotted line represents a carbon-carbon single bond;
• 2) at most 30% of a compound of formula
• in the form of any one of its stereoisomers or a mixture thereof, and wherein R represents
• a hydrogen atom and the dotted line represents a carbon-carbon single or double bond;
• or
• a CH2 group bonded with C4 and C5 and the dotted line represents a carbon-carbon single bond;
• and
• wherein the percentages are w/w percentages relative to the total weight of the composition.