Compound NAD+ NADH Modified Nucleoside λex a 259 340 λem a (Φ) - 460 (0.02) Enzymatic Activities Tested with NAD Analog b n/a Refs. [31] ε-NAD+ 1 1,N6-Ethenoadenosine (ε-A) 300 415 Glutamate dehydrogenase (+) NAD glycohydrolase (8%) NAD pyrophosphatase (54%) Alcohol ...