Sulfo-ara-F-NMN (CZ-48) is a mimetic of nicotinamide mononucleotide (NMN). Sulfo-ara-F-NMN acts selectively, activating SARM1 but inhibiting CD38 (IC50 around 10 μM). Sulfo-ara-F-NMN induces intracellular cyclic ADP-ribose (cADPR) production.In Vitro: Sterile alpha and Toll/interleukin-1 receptor motif-containing 1 (SARM1) is an adaptor protein in the Toll-like receptor pathway. Sulfo-ara-F-NMN activates SARM1 to produce cyclic ADP-ribose and induces non-apoptotic cell death.