2. Signaling Pathways
  3. Cell Cycle/DNA Damage
  4. CDK
  5. CDK6 Isoform

CDK6

CDK6 (cyclin-dependent kinase 6) is a serine/threonine kinase that forms active complexes with D-type cyclins and regulates G1-phase progression and the G1/S cell-cycle transition through phosphorylation of the retinoblastoma protein (RB), thereby controlling E2F-dependent transcriptional programs[1][2]. Mechanistically, CDK6 integrates mitogenic and hormone-derived signals through cyclin D activation, linking extracellular growth cues to cell-cycle entry and cellular proliferation[1][3]. Beyond canonical cell-cycle regulation, accumulating evidence indicates that CDK6 contributes to tumor development and progression in hematologic malignancies and solid tumors, where dysregulated cyclin D-CDK6 signaling promotes uncontrolled proliferation and therapeutic resistance[1][4]. In disease models of hormone receptor-positive breast cancer, aberrant CDK4/6 activity drives RB phosphorylation and cell-cycle progression, making this pathway a central therapeutic target[3][5]. Compared with the closely related isoform CDK4, CDK6 displays distinct regulatory and biological functions, including kinase-dependent and kinase-independent activities that influence transcriptional regulation and tumor adaptation[4][6]. For experimental applications, selective CDK4/6 inhibitors including palbociclib, ribociclib, and abemaciclib block the G1/S transition by suppressing CDK4/6 activity, although these compounds exhibit different affinities toward CDK4 and CDK6 and produce distinct biological and clinical effects[3][5]. CDK6 overexpression, CDK6-containing resistant complexes, and alterations in RB-associated pathways have also been implicated in resistance mechanisms, supporting continued investigation of CDK6-selective targeting strategies in cancer research[5][7].

Cat. No. Product Name Effect Purity
  • HY-50767
    Palbociclib
    		Inhibitor 99.94%
    Palbociclib (PD 0332991) is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-16297A
    Abemaciclib
    		Inhibitor 99.97%
    Abemaciclib (LY2835219) is a selective and BBB-permeable CDK4/6 inhibitor with IC50 values of 2 nM and 10 nM for CDK4 and CDK6, respectively.
  • HY-15777
    Ribociclib
    		Inhibitor 99.94%
    RRibociclib (LEE011) is an ATP-competitive and orally active CDK4/6 inhibitor that crosses the blood-brain barrier with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
  • HY-50767C
    Palbociclib hydrochloride
    		Inhibitor 99.96%
    Palbociclib (PD 0332991) hydrochloride is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib hydrochloride has potent anti-proliferative activity and induces cell cycle arrest in cancer cells. Palbociclib hydrochloride can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-101563
    GSK3326595
    		99.83%
    GSK3326595 is a protein arginine methyltransferase 5 (PRMT5) inhibitor. GSK3326595 decreases SARS-CoV-2 infection, inhibits cancer cell proliferation and induces pro-inflammatory macrophage polarization and increases hepatic triglyceride levels without affecting atherosclerosis. GSK3326595 can be used for research of relapsed/refractory mantle cell lymphoma.
  • HY-182468
    OP-3136
    OP-3136 is a selective KAT6 inhibitor. OP-3136 reduces the proliferative capacity of cancer cells and inhibits cell growth in ER+ breast cancer cell models with overexpressed KAT6. When combined with ER antagonists/degraders or CDK4/6 inhibitors, OP-3136 exhibits synergistic anti-tumor activity in mouse xenograft models. OP-3136 can be used in studies related to HR+/HER2- breast cancer.
  • HY-180277
    PROTAC CDK6 Degrader 1
    		Degrader
    PROTAC CDK6 Degrader 1 (compound 48a) is a potent and selective PROTAC CDK6 degrader with a DC50 of 0.037 μM. PROTAC CDK6 Degrader 1 exhibits selectivity over CDK4 (DC50 > 10 μM). PROTAC CDK6 Degrader 1 induces G0/G1 cell-cycle arrest and apoptosis through inhibition of CDK6 downstream signaling. PROTAC CDK6 Degrader 1 reduces tumor burden and CDK6 levels in a MOLM-14 xenograft mouse model. PROTAC CDK6 Degrader 1 can be used for CDK6-driven cancers research, such as acute myeloid leukemia (AML).
  • HY-185121
    PROTAC CDK2/4/6 Degrader-2
    		Degrader
    PROTAC CDK2/4/6 Degrader-2 is a CDK2/4/6 PROTAC degrader. PROTAC CDK2/4/6 Degrader-2. PROTAC CDK2/4/6 Degrader-2 can be converted into the prodrug PROTAC CDK2/4/6 Degrader-1 (HY-171826) through a one-step reaction with chloromethyl pivalate. PROTAC CDK2/4/6 Degrader-2 degrades CDK2/4/6 and their complex in malignant melanomas cells. PROTAC CDK2/4/6 Degrader-2 induces cell cycle arrest and cell apoptosis in various cancer cells, in particular for melanomas. PROTAC CDK2/4/6 Degrader-2 can be used for malignant melanomas research.
  • HY-50767A
    Palbociclib monohydrochloride
    		Inhibitor 99.98%
    Palbociclib (PD 0332991) monohydrochloride is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib monohydrochloride has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-A0065
    Palbociclib isethionate
    		Inhibitor 99.98%
    Palbociclib (PD 0332991) isethionate is an orally active selective CDK4 and CDK6 inhibitor with IC50 values of 11 and 16 nM, respectively. Palbociclib isethionate has potent anti-proliferative activity and induces cell cycle arrest in cancer cells, which can be used in the research of HR-positive and HER2-negative breast cancer and hepatocellular carcinoma.
  • HY-16297
    Abemaciclib methanesulfonate
    		Inhibitor 99.95%
    Abemaciclib methanesulfonate (LY2835219 methanesulfonate) is a selective and BBB-permeable CDK4/6 inhibitor with IC50s of 2 nM and 10 nM for CDK4 and CDK6, respectively.
  • HY-103712A
    Samuraciclib hydrochloride
    		Inhibitor 99.98%
    Samuraciclib hydrochloride (CT7001 hydrochloride) is a potent, selective, ATP-competitive and orally active CDK7 inhibitor, with an IC50 of 41 nM. Samuraciclib hydrochloride displays 45-, 15-, 230- and 30-fold selectivity over CDK1, CDK2 (IC50 of 578 nM), CDK5 and CDK9, respectively. Samuraciclib hydrochloride inhibits the growth of breast cancer cell lines with GI50 values between 0.2-0.3 µM. Samuraciclib hydrochloride has anti-tumor effects.
  • HY-103248
    Toyocamycin
    		Inhibitor 99.27%
    Toyocamycin (Vengicide) is an adenosine analog produced by Streptomyces diastatochromogenes, acts as an XBP1 inhibitor. Toyocamycin blocks RNA synthesis and ribosome function, and induces apoptosis. Toyocamycin affects IRE1α-XBP1 pathway, and inhibits XBP1 mRNA cleavage with an IC50 value of 80 nM with affecting IRE1α auto-phosphorylation. Toyocamycin specifically inhibits CDK9 with an IC50 value of 79 nM.
  • HY-50940
    AT7519
    		Inhibitor 99.69%
    AT7519 (AT7519M) as a potent inhibitor of CDKs, with IC50s of 210, 47, 100, 13, 170, and <10 nM for CDK1, CDK2, CDK4 to CDK6, and CDK9, respectively.
  • HY-10329
    JNJ-7706621
    		Inhibitor 99.39%
    JNJ-7706621 is a potent aurora kinase inhibitor, and also inhibits CDK1 and CDK2, with IC50s of 9 nM, 3 nM, 11 nM, and 15 nM for CDK1, CDK2, aurora-A and aurora-B, respectively.
  • HY-15777A
    Ribociclib hydrochloride
    		Inhibitor 99.95%
    RRibociclib (LEE011) hydrochloride is an ATP-competitive and orally active CDK4/6 inhibitor that crosses the blood-brain barrier with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
  • HY-15777B
    Ribociclib succinate
    		Inhibitor 99.93%
    RRibociclib (LEE011) succinate is an ATP-competitive and orally active CDK4/6 inhibitor that crosses the blood-brain barrier with IC50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.
  • HY-10012
    AZD-5438
    		Inhibitor 99.91%
    AZD-5438 is a potent CDK1, CDK2, and CDK9 inhibitor, with IC50s of 16 nM, 6 nM, and 20 nM in cell-free assays, respectively. AZD-5438 shows less inhibition activity against GSK3β, CDK5 and CDK6 .
  • HY-114177
    Ebvaciclib
    		Inhibitor 99.98%
    PF-06873600 is a selective and orally bioavailable inhibitor of cyclin-dependent kinase (CDK), with Ki values of 0.09 nM, 0.13 nM and 0.16 nM for CDK2, CDK4 and CDK6, respectively. PF-06873600 has potential antineoplastic activity.
  • HY-136250
    BSJ-03-204
    		Inhibitor 99.76%
    BSJ-03-204 is a PROTAC connected by ligands for Cereblon and CDK. BSJ-03-204 is a potent and selective Palbociclib-based CDK4/6 dual degrader (PROTAC), with IC50s of 26.9 nM and 10.4 nM for CDK4/D1 and CDK6/D1, respectively. BSJ-03-204 does not induce IKZF1/3 degradation and has anti-cancer activity.
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity