File:Steroid lettering and numbering.svg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:37, 5 January 2022		491 × 327 (24 KB)	Innerstream	{{Information \|description={{en\|Chemical diagram showing IUPAC nomenclature's lettering (red, A-D, for each ring) and numbering (blue, 1-17, for each carbon atom) systems for the central tetracyclic core of steroids.}} \|source={{Own}} \|date={{subst:CURRENTYEAR}}-{{subst:CURRENTMONTH}}-{{subst:CURRENTDAY}} \|author=User:Innerstream \|permission={{PD-chem}} }} Category:Steroids

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Width	491.13019
Height	327.30209