Synonyms: 4-Carboxy-1-b-D-ribofuranosylpyridiniumhydroxide, hydrazide, 5'-ester with adenosine 5'-pyrophosphate, inner salt(7CI); Pyridinium, 4-carboxy-1-b-D-ribofuranosyl-, hydroxide, hydrazide, 5'®5'-ester with adenosine 5'-(trihydrogenpyrophosphate), inner salt (8CI); DPN-isonicotinic acid hydrazide; Isonicotinicacid hydrazide adenine dinucleotide; Isonicotinic acid hydrazide-DPN;Isonicotinic acid hydrazide-NAD; Isonicotinoyl hydrazide adenine dinucleotide