Table 1. Inhibition of cADPR hydrolysis by CD38 for cIDPR and N1-IMP analogue.

Compound	IC50
cIDPR analogues
8-Amino N1-cIDPR	56 µM ±9 µM
cADPcR	129 µM ±12 µM
8-Bromo N1-cIDPR	158 µM ±13 µM
N1-cIDPR	276 µM ±10 µM [30]
8-(4-Aminobutane)	>1 mM
amino N1-cIDPR
N 1-IMP analogues
8-Iodo N1-IMP	>1 mM
8-Bromo N1-IMP	201 µM ±41 µM
N1-IMP	14 µM ±5 µM
8-Amino N1-IMP	7.7 µM ±0.2 µM