HCID 178450862, compound → HCID 66861293, compound

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The title compound was prepared from a mixture of 4,7-dihydroxy-2-phenylsulfanyl-thieno[3,2-c]pyridine-6-carboxylic acid n-butyl ester and 4,7 dihydroxy-2-phenylsulfanyl-thieno[2,3-c]pyridine-5-carboxylic acid n-butyl ester, example 17.a, under conditions analogous to experimental conditions 5.a. The products were obtained as a mixture of the two isomers; MS: (+) m/z 437.91, 439.91 (M+1, 79Br/81Br).

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