[Saionji]

Can be considered a carboxylic acid this : http://img155.imageshack.us/img155/2057/imagemnzo.png
Because this is an anion of carboxylic acid but i do not know if the concepts are different.

[Jorriss]

That's the conjugate base of a carboxylic acid.


If you have a solution with chloride ions you wouldn't say you haven't hydrochloric acid though right? You have it's conjugate base.

[Caeldom]

And it has a name, if you're wondering Saionji, it's commonly called a pyroglutamate ion. The systematic name however is a bit longer, but if I tell you the pentagon structure with the NH and oxygen double bond is called 5-oxopyrrolidine, can you work it out? Just follow proper nomenclature! Then from that, can you figure out the name of the acid (both common and systematic names)?

Also, your structural diagram doesn't specify the chirality, but the molecule is in fact enantiomeric (or -morphic), that is, it has right-handed and left-handed versions. The acid group (-COOH) can be off the carbon junction at an angle towards you, or away from you (switching with the hydrogen).

jsyk