luminol

noun
lu·​mi·​nol | \ˈlü-mə-ˌnȯl, -ˌnōl \

Medical Definition of luminol 

: an almost white to yellow crystalline compound C8H7N3O2 that gives a brilliant bluish luminescence when it is treated in alkaline solution with an oxidizing agent (as hydrogen peroxide) and that is used in chemical analysis

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