Chemical formula: C₂₇H₃₂F₂N₈  Molecular mass: 506.606 g/mol  PubChem compound: 46220502

Active ingredient description

Abemaciclib is a potent and selective inhibitor of cyclin-dependent kinases 4 and 6 (CDK4 and CDK6), and most active against Cyclin D1/CDK4 in enzymatic assays. Abemaciclib prevents retinoblastoma protein (Rb) phosphorylation, blocking cell cycle progression from the G1 to the S-phase of cell division, leading to suppression of tumour growth.

Medicine classification

This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:

ATC code Group title Classification
L01EF03 L Antineoplastic and immunomodulating agents → L01 Antineoplastic agents → L01E Protein kinase inhibitors → L01EF Cyclin-dependent kinase (CDK) inhibitors
Discover more medicines within L01EF03

Product monographs

Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):

Title Information Source Document Type  
VERZENIOS Film-coated tablet European Medicines Agency (EU) MPI, EU: SmPC

Structural formula

Graphic representation of the active ingredient's molecular structure

External identifiers

CAS Substance: 1231929-97-7
DrugBank Drug: DB12001
PubChem Compound: 46220502
RxNorm Ingredient: 1946825
SNOMED-CT Concept: 761851004
Abemaciclib (substance)
UNII Identifier: 60UAB198HK


Abemaciclib is an active ingredient of these brands:

United States (US)

Australia (AU)

Austria (AT)

Brazil (BR)

Canada (CA)

Croatia (HR)

Cyprus (CY)

Ecuador (EC)

Estonia (EE)

Finland (FI)

France (FR)

Hong Kong (HK)

Ireland (IE)

Israel (IL)

Italy (IT)

Japan (JP)

Lithuania (LT)

Netherlands (NL)

Poland (PL)

Romania (RO)

Singapore (SG)

South Africa (ZA)

Spain (ES)

Turkey (TR)

United Kingdom (UK)

Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.

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