Aceglutamide is the "acetyl derivative of the amino acid L-glutamine" according to Wikipedia. "Aceglutamide is a psychostimulant and nootropic[1] used to improve memory and concentration.[2] Chemically, it is the acetyl derivative of the amino acid L-glutamine."
[1] Merck Index, 11th Edition, 21
[2] Macdonald, F, ed. (1997). Dictionary of pharmacological agents. p. A-00018. ISBN 978-0-412-46630-4.
The link above says it's "N2-acetylglutamine". But, then says, "Strictly, the name Aceglutamide applies to the (S)-form. Psychostimulant; used to improve memory and concentration.
I just thought this was interesting. I had never seen that spelling before. The idea of glutamine being a nootropic has been discussed many times before.