Europinidin (Eu) is an O-methylated anthocyanidin. It is a water-soluble, bluish red plant dye. It is a rare O-methylated flavonoid, a derivative of delphinidin. It can be found in some species of Plumbago and Ceratostigma.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).