Detailed Product Description coumarin, C9H6O2, CAS # 91-64-5, We are specialized in export various aromatic chemicals producing by China Plants. We are trader and borker but only with a bit benefits. Our main products Including: Maltol, ethyl maltol, musk-t, musk ketone, musk xylol, allyl amyl glycolate, coumarin, methyl salicylate etc.