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dl-Isomenthol alone is considerably less cooling than (-)-Menthol and posesses a somewhat musty, woody camphoric odor. But, in United States Patent 8496950 (July 30, 2013) by Klaus Sorge, Hubert Loges, Arnold Machinek, Ulrike Simchen & Horst Surburg entitled MIXTURE CONTAINING MENTHOL assigned to Symrise the use of dl-Isomenthol in various menthol mixtures has been shown to lower the melting point of such mixtures. In addition, at the levels used the organoleptic perception is acceptable or impr ...
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