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DescriptionTetrahydronaphthalenedione.png	English: Skeletal structures for the equilibrium reaction of tautomerization between tetrahydronaphthalenedione (1,4-dioxotetralin) and 1,4-naphthalenediol.
Date	25 July 2011
Source	Own work
Author	DMacks ( talk)

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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	Date/Time	Dimensions	User	Comment
current	02:56, 24 May 2016	1,480 × 692 (21 KB)	DMacks	can do without the numbers Reverted to version as of 03:10, 25 July 2011 (UTC)
	02:56, 24 May 2016	1,480 × 692 (21 KB)	DMacks	can do without the numbers Reverted to version as of 03:10, 25 July 2011 (UTC)
	03:12, 25 July 2011	1,495 × 740 (23 KB)	DMacks	okay, en.wp does use the structure-numbers
	03:10, 25 July 2011	1,480 × 692 (21 KB)	DMacks	redraw from scratch: fix symbols for equilibrium, remove numbers (not used in either current image-use, inhibits reuse), clear bg
	17:05, 24 January 2007	557 × 256 (2 KB)	Pngbot	optimized with optipng
	11:12, 21 September 2006	557 × 256 (3 KB)	Stylelabal	{{Information \|Description=Tetrahydronaphthalenedione \|Source= en:Image:Tetrahydronaphthalenedione.png \|Date=Unknown \|Author= V8rik \|Permission={{GFDL}} \|other_versions= }} Category:Unknown_subject