90319-06-5 N-Acetyltalosaminuronic acid NAT Talanac alpha-L-2-N-Acetylamino-2-desoxytaluronic acid alpha-L-N-Acetyltalosaminuronic acid alpha-L-Talopyranuronic acid, 2-(acetylamino)-2-deoxy-, (5Z,11alpha,13E,15S)-