<prompt> N Methyl Glycine is known as:BetaineSarcosineCarnosineErgothionine  <response>: Sarcosine N-methylglycine intermediate and by-product in Glycine synthesis and degradation Ergothionine is a thiourea derivative of Histidine, containing a sulfur atom on the imidazole ring Betaine is N,N,N-Trimethylglycine, present in beet sugar. Carnosine Beta-Alanyl-L-Histidine, has Imidazole ring like Histidine, is a dipeptide molecule, made up of Beta-Alanine and Histidine. It is present in muscle and brain tissues. 