Can someone please explain why the attached image has carbons with priorities of 2 and 3? I have tried a few online tools, but they cannot explain which carbon is the first carbon in the ordering of the chain. The rest of the nomenclature makes perfect sense, but I would think the 2's and 3's in the picture ought to be 1's and 2's.
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Topic: Nomenclature priorities (Read 1635 times)