Talk:Ninhydrin
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The writer(s) forgot to add whether it was a solid, liquid or gas in its pure state.
[edit] Wrong structure?
Yes, 5 bonds do not fit here.
One of the carbon atoms on the right side of the bottom-right structure diagram has 5 bonds. Does anyone know what the correct structure is, and if so, could you please change it? ~GMH 05:02, 22 July 2005 (UTC)
I agree. Carbon can't have 5 bonds... at least I didn't think it could.
Yes, there is a mistake. There is a part of the molecule which can't have a mesomeric effect. I uploaded a modified image. --Totophe64 19:02, 27 December 2005 (UTC)
Woops, there was no copyright on the picture, so it got deleted ! I didn't know that it was possible to copyright the description of chemical reactions, as this is not the creation of somebody, but something which is "natural" ... Ow I love copyrights ! --Totophe64 15:35, 10 March 2006 (UTC)
I thought also that the ejected part of the amino acid was an aldehyde.
"Triketohydrindane hydrate", i can only see two "ketos". What's wrong, the image or the name?
- That is "Triketohydrindane hydrate", a H2O molecule is added to the third ketone, which becomes diol on the same Carbon atom. Ray Leung 10:29, 10 March 2006 (UTC)
- I'm currently doing research using ninhydrin that proves/shows that the two hydroxide groups are actually one double bonded oxygen. Actually it's an equilibrium reaction between the two when in water.
--Nbx909 (talk) 00:10, 18 April 2008 (UTC)
