n :  a test for unsaturated steroids (as cholesterol) and triterpenes based on the formation of a series of colors (as pink to blue to green) with acetic anhydride in the presence of concentrated sulfuric acid - called also Liebermann-Burchard test 
 
Liebermann, Carl Theodore (1842-1914), German chemist. Liebermann is most famous for his work with fellow chemist Carl Graebe (1841-1927). Their work on artificial dyes gave considerable impetus to the development of the modern dye industry. Liebermann was the author of more than 350 scientific papers. He investigated quercetin and naphthalene compounds and prepared halogen and phenol derivatives. H. Burchard may have been one of his many student research assistants.
 
 
 
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