(E/Z)-NSAH is an isoform of NSAH (HY-114503), which is reversible and competitive nonnucleoside ribonucleotide reductase (RR) inhibitor, with cell-free IC50 of 32 μM and cell-based IC50 of ~250 nM, respectively[1].
References
[1] Md Faiz Ahmad, et al. Potent competitive inhibition of human ribonucleotide reductase by a nonnucleoside small molecule. Proc Natl Acad Sci U S A. 2017 Aug 1;114(31):8241-8246. DOI:10.1073/pnas.1620220114
