Isopentyl isopentanoateCAS NO.: 659-70-1 CAS NO.659-70-1

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Description	Isoamyl isovalerate has a characteristic fruity odor and a sweet apple-like flavor. May be prepared by passing vapors of isoamyl alcohol and isovaleric aldehyde over a copper uranium based catalyst at 240 - 280°C in the presence of hydrogen.
Chemical Properties	Isoamyl isovalerate has a fruity, sweet, apple, apricot, mango-characteristic fruity odor and sweet-apple-like flavor.
Occurrence	Reported found in the ether oil from leaves of Eucalyptus microcorys, angelica root oil and mastic gum leaf and fruit oils. Also reported in wine, oil of hop, olive oil, banana, tomato, peppermint and spearmint oil, beer, rum, whiskies, cider, sherry, plum, quince, cherimoya and lamb’s lettuce.
Uses	As apple essence for flavoring liqueurs and candy.
Preparation	By passing vapors of isoamyl alcohol and isovaleric aldehyde over a copper–uranium-based catalyst at 240 to 280°C in the presence of hydrogen
Aroma threshold values	Detection: 20 ppb; aroma characteristics at 1.0% in ethanol: sweet, fruity, green apple and estry.
Taste threshold values	Taste characteristics at 15 ppm: green, fruity, estry, apple, pineapple and tutti-frutti