≥98% (HPLC)

Empirical Formula (Hill Notation):
Numéro CAS:
Poids moléculaire:

Niveau de qualité



≥98% (HPLC)




white to beige


DMSO: 5 mg/mL, clear (warmed)

Temp. de stockage



5, 25 mg in glass bottle

Actions biochimiques/physiologiques

4μ8C is a salicylaldehyde derivative and its inhibitory action targets the K907 lysine residue in RNase (ribonuclease) domain and affects IRE1α (endoplasmic reticulum to nucleus signaling 1) RNase activity. In vitro analysis proved that 4μ8C was able to inhibit the release of insulin at high glucose levels.
4μ8C is a potent inhibitor of the ER transmembrane protein IRE1, which mediates the unfolded protein response. 4μ8C inhibits regulated IRE1-dependent degradation (RIDD) and unconventional spicing of XBP1 mRNA in response to endopasmic reticulum (ER) stress, but has no affect on the kinase activity of IRE1.


NONH for all modes of transport

WGK Allemagne


Flash Point(F)

Not applicable

Point d'éclair C

Not applicable

Certificat d'analyse
Certificat d'origine
Jirka Peschek et al.
EMBO reports, 16(12), 1688-1698 (2015-10-21)
The kinase/endonuclease IRE1 is the most conserved signal transducer of the unfolded protein response (UPR), an intracellular signaling network that monitors and regulates the protein folding capacity of the endoplasmic reticulum (ER). Upon sensing protein folding perturbations in the ER...
Targeting the IRE1α?XBP1 branch of the unfolded protein response in human diseases.
Jiang D, et al.
Seminars in Cancer Biology, 33, 48-56 (2015)
4μ8C inhibits insulin secretion independent of IRE1α RNase activity.
Sato H, et al.
Cell Structure and Function, 42(1), 61-70 (2017)
Vladislav Pokatayev et al.
Nature immunology, 21(2), 158-167 (2020-01-15)
STING (stimulator of interferon genes) is an important innate immune protein, but its homeostatic regulation at the resting state is unknown. Here, we identified TOLLIP as a stabilizer of STING through direct interaction to prevent its degradation. Tollip deficiency results...
Baoyi Zhu et al.
Journal of cellular physiology, 235(10), 7370-7382 (2020-02-11)
Smooth muscle cells (SMCs) are characterized by a high degree of phenotypic plasticity. Contractile differentiation is governed by myocardin-related transcription factors (MRTFs), in particular myocardin (MYOCD), and when their drive is lost, the cells become proliferative and synthetic with an...
Contenu apparenté
We offer a variety of small molecule research tools, such as transcription factor modulators, inhibitors of chromatin modifying enzymes, and agonists/antagonists for target identification and validation in gene regulation research; a selection of these research tools is shown below.
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