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138742-67-3 3h-naphtho[2,1-b]pyran-3-one,1-(2-dibenzothienylcarbonyl)-1,2-dihydro-2-(phenylmethylene

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Product Name 3H-Naphtho[2,1-b]pyran-3-one,1-(2-dibenzothienylcarbonyl)-1,2-dihydro-2-(phenylmethylene)-
CAS No. 138742-67-3
Molecular Formula C33H20O3S