150815-54-6 24739-34-2 3063-71-6 31921-05-8 CMP acetylneuraminic acid CYTIDINE MONOPHOSPHATE N-ACETYLNEURAMINIC ACID Cmp-nana D-glycero-beta-D-galacto-2-Nonulopyranosonic acid, 5-(acetylamino)-3,5-dideoxy-, 2-(hydrogen 5'-cytidylate)