ISRIB-A17, which is nearly 10-fold more potent than ISRIB-A1

Technical Data for ISRIB

M. Wt451.34
StorageStore at +4°C
Purity≥99% (HPLC)
CAS Number1597403-47-8
PubChem ID1011240


trans-ISRIB is an integrated stress response (ISR) inhibitor; reverses the effects of eIF2α phosphorylation (IC50 = 5 nM) and restores cell translation capacity. Acts downstream of PERK, targeting interactions between eIF2α kinases and elF2B. Blocks ATF4 production without altering the IRE1 or ATF6 responses in vitro. Displays memory enhancement in hippocampus-dependent spatial and fear-associated learning in rodents. trans-ISRIB promotes survival of pluripotent stem cells in culture when used in combination with Chroman-1 (Cat. No. 7163), emricasan, and polyamines, a combination known as CEPT. When used as part of the CEPT cocktail, trans-ISRIB improves survival of differentiated cells following cryopreservation. Brain penetrant.


as F or Cl to ISRIB molecules increases solubility in water. Finally, get ISRIB-A17 for F and ISRIB-A15 for Cl



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