MAKE A MEME View Large Image Ponceau 2R.png Chemical structure of Ponceau 2R Author date of creation selfmade by Shaddack 6 November 2005 Source self-made Copyright Public Domain PD Comments b/w hires PNG; ChemDraw 2005-11-26 own assumed Shaddack Azo dyes
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Keywords: Ponceau 2R.png Chemical structure of Ponceau 2R Author date of creation selfmade by Shaddack 6 November 2005 Source self-made Copyright Public Domain PD Comments b/w hires PNG; ChemDraw 2005-11-26 own assumed Shaddack Azo dyes
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