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(al'kă-nin), [C.I. 75530]
The major red dye derived from alkanet; used as an astringent, in cosmetics, and foods; can be used as an indicator: red at pH 6.8, changing to purple at pH 8.8 and blue at pH 10; also used as a fat stain.
Synonym(s): anchusin
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References in periodicals archive ?
The teracryl alkannin has found to be present in roots of A.
A direct comparison (ir, nmr and ms) of isolated compounds with an authentic sample of alkannin showed the two to be indistinguishable (Khan et al.
Ballis, Alkannins and shikonins: a new class of wound healing agents.