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Wondering if there are IUPAC rules or conventions about structure orientation. There are recommendations, which aren't really rules per se (in fact even the IUPAC nomenclature books are all technically recommendations). For "how to draw structures", the appropriate recommendations are: Brecher, J. Graphical representation standards for chemical ...


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The relevant rule for the numbering in the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) reads as follows. P-65.5.1 Acyl halides from suffix acids P-65.5.1.1 Acid halides in which hydroxy groups of all acid groups expressed as the suffix denoting the principal characteristic group (...


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