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There is a page named "File:Ullmann biphenyl synthesis.svg" on Wikipedia
DescriptionUllmann biphenyl synthesis.svg English: Chemical diagram showing examples of the Ullmann reaction used to synthesize biphenylene Date 22 October...(940 × 625 (28 KB)) - 06:34, 8 June 2023
File:Ullmann biphenyl synthesis.svg is a vector version of this file. It should be used in place of this JPG file when not inferior. File:Ullman Byphenyl...(244 × 176 (9 KB)) - 23:56, 22 October 2022
