| abstract |
A geometrical isomer composition excellent in odornand in chemical resistance, which is applicable to a basenmaterial containing a strongly alkaline chemical or anstrongly acidic chemical, which can suppress thendeterioration with time and the color change of the basenmaterial in the case that the material is exposed to light,nand which also have highly tasteful and unique fruitynfloral fragrance. A geometrical isomer compositionncontaining 93 to 99% by weight of optically active trans-1-(2,2,6-trimethylcyclohexyl)-2-buten-1-onenrepresented bynFormula-1 or a mixture thereof and 7 to 1% by weight ofnoptically active cis-1-(2,2,6-trimethylcyclohexyl)-2-buten-1-onenrepresented by Formula-2 or a mixture thereof is,nrespectively, used. |