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Zunsemetinib

Chemical FDA Substance Registry (openFDA)
Chemical Identification
CAS Number1640282-42-3
INCI Name3-chloro-4-[(3,5-difluoro-2-pyridinyl)methoxy]-1-[2-[2-(2-hydroxypropan-2-yl)pyrimidin-4-yl]-5-methyl-4-pyridinyl]-6-methylpyridin-2-one
PubChem CID 86291496
Molecular FormulaC25H22ClF2N5O3
InChIKeyInChI=1S/C25H22ClF2N5O3/c1-
SMILESCC1=CC(=C(C(=O)N1C2=CC(=NC=C2C)C3=NC(=NC=C3)C(C)(C)O)Cl)OCC4=C(C=C(C=N4)F)F
Known Aliases (11)
Common Name
ATI-450 ATI450 ATI 450 [WHO-DD] CDD-450 CDD450 zunsemetinib [INN] ZUNSEMETINIB [USAN]
Scientific Name
[1(2H),4′-Bipyridin]-2-one, 3-chloro-4-[(3,5-difluoro-2-pyridinyl)methoxy]-2′-[2-(1-hydroxy-1-methylethyl)-4-pyrimidinyl]-5′,6-dimethyl-, (2′S)- (2′S)-3-Chloro-4-[(3,5-difluoro-2-pyridinyl)methoxy]-2′-[2-(1-hydroxy-1-methylethyl)-4-pyrimidinyl]-5′,6-dimethyl[1(2H),4′-bipyridin]-2-one (-)-3-Chloro-4-[(3,5-difluoro-2-pyridinyl)methoxy]-2'-[2-(1-hydroxy-1-methylethyl)-4-pyrimidinyl]-5',6-dimethyl[1(2H),4'-bipyridin]-2-one (P)-(3-chloro-4-((3,5-difluoropyridin-2-yl)methoxy)-2'-(2-(2-hydroxypropan-2-yl)pyrimidin-4-yl)-5',6-dimethyl-2H-[1,4'-bipyridin]-2-one)
Data Sources (1)
Source Source ID Name in Source Properties
FDA Substance Registry (openFDA) AX2VWG0ZCR Zunsemetinib CAS: 1639791-42-6
INN: 11983
USAN: JK-96
SMS_ID: 300000039070
PUBCHEM: 86291496
FDA UNII: AX2VWG0ZCR
NCI_THESAURUS: C182621
FDA ORPHAN DRUG: 795720
Record Info
ID7P2EpPPyqaR24CDhRAN7ZL
CreatedApril 10, 2026, 8:13 p.m.
ModifiedApril 11, 2026, 12:27 a.m.
EnrichedApril 11, 2026, 12:09 a.m.
Data SourceFDA Substance Registry (openFDA)