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esculin

or aesculin

[es-kyuh-lin] /ˈɛs kyə lɪn/
noun, Chemistry
1.
a white, crystalline, slightly water-soluble glucoside, C 15 H 16 O 9 , obtained from the bark of the common horse chestnut and used chiefly in skin preparations as a protective against sunburn.
Origin of esculin
< Italian esculina < New Latin Aescul(us) (first part of genus name of species that produces it) + Italian -ina -in2
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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  • esculin will not luminesce with peroxidase and H2O2, but pyrogallol or gallic acid will.

    The Nature of Animal Light E. Newton Harvey

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