1188296-52-7

PF-4800567 is a selective inhibitor of casein kinase 1ε (CK1ε; IC₅₀ = 32 nM) with greater than 20-fold selectivity over CK1δ. It blocks CK1ε-mediated PER3 nuclear localization and PER2 degradation, both of which are proteins important for maintaining circadian rhythms in cells. PF-4800567 has been used in the study of the CK1 enzymes in the regulation of circadian rhythm and is also reported to have neuroprotective effects.

PF 4800567 is a selective casein kinase 1ε inhibitor; displays 22-fold greater potency towards CK1ε than CK1δ (IC50 values are 32 and 711 nM for CK1ε and CK1δ respectively). ATP competitive. Displays minimal effect on the circadian clock.

ChEBI: PF-4800567 is a pyrazolopyrimidine that is 1H-pyrazolo[3,4-d]pyrimidin-4-amine which is substituted at positions 1 and 3 by tetrahydro-2H-pyran-4-yl and (m-chlorophenoxy)methyl groups, respectively. It is a selective inhibitor of the epsilon isoform of casein kinase 1 (CK1epsilon). It has a role as an EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor. It is a pyrazolopyrimidine, a member of monochlorobenzenes, an aromatic ether and a member of oxanes.

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