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Pronunciation varies by accent · noun
A yellow crystalline solid that occurs mainly in the wings of butterflies and in the urine of mammals, converted by microorganisms into folic acid..
Use xanthopterin when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Xanthopterin means A yellow crystalline solid that occurs mainly in the wings of butterflies and in the urine of mammals, converted by microorganisms into folic acid..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use xanthopterin where its definition matches the intended context.
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