thumb|upright|Chemical structure of quercitrin, the active dyeing principle of quercitron thumb|upright|Powdered quercitron
thumb|upright|Chemical structure of quercitrin, the active dyeing principle of quercitron thumb|upright|Powdered quercitron
Quercitron is a yellow natural dye obtained from the bark of the Eastern Black Oak (Quercus velutina), a forest tree indigenous in North America. It was formerly called Dutch pink, English pink, or Italian pink.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).