Synonyms: DL-Histidine,a-methyl-, dihydrochloride;Histidine, 2-methyl-, dihydrochloride, DL- (6CI); Histidine, a-methyl-, dihydrochloride, DL-(8CI); DL-a-Methylhistidine dihydrochloride;a-Methyl-DL-histidinedihydrochloride; a-Methylhistidinedihydrochloride