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Beige canister with lid of quinine sulfate. Can reads: "5ozs. Quinine Sulfate Merek U.S.P. (C20H24N2O2)2 . H2SO4 . 2H2O Mol. wt. 782.92 CAUTION - To be dispensed only by or on the prescription of a physician, or otherwise used only for manufacturing purposes. Merek & Co., Inc. - Rahway, N.J. Manufacturing Chemists"

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