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I9785

Sigma-Aldrich

Imidazolo-oxindole PKR inhibitor C16

≥98% (HPLC)

Synonym(s):

6,8-Dihydro-8-(1H-imidazol-5-ylmethylene)-7H-pyrrolo[2,3-g]benzothiazol-7-one

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About This Item

Empirical Formula (Hill Notation):
C13H8N4OS
CAS Number:
608512-97-6
Molecular Weight:
268.29
MDL number:
MFCD06735404
UNSPSC Code:
12352200
PubChem Substance ID:
329815469
NACRES:
NA.77

Assay

≥98% (HPLC)

color

yellow to orange-brown

solubility

DMSO: 12 mg/mL

shipped in

wet ice

storage temp.

−20°C

SMILES string

O=C1NC2=CC=C3C(SC=N3)=C2/C1=C/C4=CNC=N4

InChI

1S/C13H8N4OS/c18-13-8(3-7-4-14-5-15-7)11-9(17-13)1-2-10-12(11)19-6-16-10/h1-6H,(H,14,15)(H,17,18)/b8-3-

InChI key

VFBGXTUGODTSPK-BAQGIRSFSA-N

Application

Imidazolo-oxindole PKR inhibitor C16 has been used:
  • to rescue fear memory deficits and restore long-term potentiation (LTP) impairment in mice
  • to inhibit the strong induction of interferon stimulated genes (ISGs) after plasmid transfection in HeLa-S3 cells
  • to augment eukaryotic translation initiation factor 2 (eIF2) activity

Biochem/physiol Actions

C16 exhibits a neuroprotective role in adult brain injuries.
Imidazolo-oxindole PKR inhibitor C16 is a selective inhibitor of RNA-dependent protein kinases (PKR, Eif2ak2). C16 is a first reported, potent and selective PKR inhibitor. Its inhibition effect on PKR is ATP-binding site directed. C16 specifically inhibits the apoptotic PKR/eIF2a signaling pathway without stimulating the proliferative mTOR/p70S6K signaling mechanism.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The specific protein kinase R (PKR) inhibitor C16 protects neonatal hypoxia-ischemia brain damages by inhibiting neuroinflammation in a neonatal rat model
Xiao J, et al.
Medical Science Monitor : International Medical Journal of Experimental and Clinical Research, 22, 5074-5074 (2016)
AIM2 inflammasome mediates Arsenic-induced secretion of IL-1 beta and IL-18
Zhang MF, et al.
Oncoimmunology, 5(6), e1160182-e1160182 (2016)
PKR-a Kinase to Remember
Gal-Ben-Ari S, et al.
Frontiers in Molecular Neuroscience, 11, 480-480 (2018)
Han Zhong et al.
Microbiology spectrum, 10(6), e0328222-e0328222 (2022-11-16)
African swine fever (ASF) is a highly contagious and often lethal disease of pigs caused by ASF virus (ASFV) and recognized as the biggest killer in global swine industry. Despite exhibiting incredible self-sufficiency, ASFV remains unconditionally dependent on the host
Jiahui Tang et al.
Antioxidants (Basel, Switzerland), 11(10) (2022-10-28)
Retinal ganglion cells (RGCs), the projection neurons of the eye, are irreversibly lost once the optic nerve is injured, which is a critical mechanism of glaucoma. Mobile zinc (Zn2+) levels rapidly increase in retinal interneuron amacrine cells and Zn2+ is
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