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File:Steroid lettering and numbering.svg

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English: 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.
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Author User:Innerstream
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Public domain This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.

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5 January 2022

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Date/TimeThumbnailDimensionsUserComment
current00:37, 5 January 2022Thumbnail for version as of 00:37, 5 January 2022491 × 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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