CDKs (Cyclin-dependent kinases) are serine-threonine kinases first discovered for their role in regulating the cell cycle. They are also involved in regulating transcription, mRNA processing, and the differentiation of nerve cells. CDKs are relatively small proteins, with molecular weights ranging from 34 to 40 kDa, and contain little more than the kinase domain. In fact, yeast cells can proliferate normally when their CDK gene has been replaced with the homologous human gene. By definition, a CDK binds a regulatory protein called a cyclin. Without cyclin, CDK has little kinase activity; only the cyclin-CDK complex is an active kinase. There are around 20 Cyclin-dependent kinases (CDK1-20) known till date. CDK1, 4 and 5 are involved in cell cycle, and CDK 7, 8, 9 and 11 are associated with transcription. CDK levels remain relatively constant throughout the cell cycle and most regulation is post-translational. Most knowledge of CDK structure and function is based on CDKs of S. pombe (Cdc2), S. cerevisia (CDC28), and vertebrates (CDC2 and CDK2). The four major mechanisms of CDK regulation are cyclin binding, CAK phosphorylation, regulatory inhibitory phosphorylation, and binding of CDK inhibitory subunits (CKIs).


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CDK1/2/4-IN-1

CDK1/2/4-IN-1 (compound 3a) is a potent CDK inhibitor with IC50 values of 1.47, 0.78 and 0.87 μM for CDK1, CDK2 and CDK4, respectively. CDK1/2/4-IN-1 arrests cell cycle at G2/M phase and induces apoptosis. CDK1/2/4-IN-1 elevates Bax, caspase-3, P53 levels and decreases Bcl-2 level. CDK1/2/4-IN-1 can be used for cancer research[1].

  • CAS Number: 2414633-49-9
  • MF: C15H16N2O2S
  • MW: 288.36
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

A09-003

A09-003 is a CDK-9 inhibitor (IC50: 16 nM). A09-003 inhibits leukemia cell proliferation (IC50: 1.90, 0.86, 2.49, 1.84, 0.48 μM for BDCM, Molm-14, THP-1, U937, MV4-11 cells). A09-003 induces apoptosis and decreases Mcl-1 expression through Thr163 dephosphorylation[1].

  • CAS Number: 2911646-14-3
  • MF: C23H26N4O
  • MW: 374.48
  • Catalog: Bcl-2 Family
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK7-IN-22

CDK7-IN-22 (compound 101) is an CDK7 inhibitor with antitumor activity. CDK7-IN-22 shows selectivity on CDK7[1].

  • CAS Number: 2173190-60-6
  • MF: C22H25F3N6
  • MW: 430.47
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Olomoucine

Olomoucine is an ATP competitive inhibitor of CDKs. Olomoucine is a purine (HY-34431) derivative and inhibits CDC2/cyclin B, Cdk2/cyclin A, Cdk2/cyclin E (both IC50=7 µM), CDK/p35 kinase (IC50=3 µM) and ERK1/p44 MAP kinase (IC50=25 µM)[1][2].

  • CAS Number: 101622-51-9
  • MF: C15H18N6O
  • MW: 298.343
  • Catalog: CDK
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 579.6±60.0 °C at 760 mmHg
  • Melting Point: 120-130 °C
  • Flash Point: 304.3±32.9 °C

Akt1&PKA-IN-1

Akt1&PKA-IN-1 is a potent dual Akt/PKA inhibitor with IC50 values of 0.03 , 0.11 μM, and 9.8 μM for PKAa, Akt, and CDK2, respectively. Akt1&PKA-IN-1 is selective for cyclin-dependent kinase 2 (CDK2)[1].

  • CAS Number: 1334107-58-2
  • MF: C20H17Cl2N3O
  • MW: 386.27
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tanuxiciclib trihydrochloride

Tanuxiciclib trihydrochloride is a cyclin dependent kinase (CDK) inhibitor[1].

  • CAS Number: 1983984-11-7
  • MF: C15H16Cl3FN6O
  • MW: 421.68
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Phloroglucinol carboxylic acid

2,4,6-Trihydroxybenzoic acid, the flavonoid metabolite, is a CDK inhibitor. 2,4,6-Trihydroxybenzoic acid can be used for the research of cancer[1].

  • CAS Number: 83-30-7
  • MF: C7H6O5
  • MW: 170.120
  • Catalog: CDK
  • Density: 1.7±0.1 g/cm3
  • Boiling Point: 426.5±30.0 °C at 760 mmHg
  • Melting Point: ~210 °C (dec.)
  • Flash Point: 225.9±21.1 °C

THZ1 2HCl

THZ1 is a selective and potent covalent CDK7 inhibitor with an IC50 of 3.2 nM.

  • CAS Number: 1604810-83-4
  • MF: C31H28ClN7O2
  • MW: 566.053
  • Catalog: CDK
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

5-(Thieno[2,3-d]pyrimidin-4-ylamino)naphthalen-1-ol

CDK9-IN-15 (compound 50) is a potent CDK9 inhibitor[1].

  • CAS Number: 852678-17-2
  • MF: C16H11N3OS
  • MW: 293.34
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PROTAC CDK9 ligand-1

PROTAC CDK9 ligand-1 is a CDK9 ligand that can be used in the synthesis of PROTACs.

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

SC 221409

CDK2-IN-3 (compound 3) is a potent and selective CDK2 inhibitor with an 50 of 60 nM[1].

  • CAS Number: 222035-13-4
  • MF: C14H11BrN4O3S
  • MW: 395.231
  • Catalog: CDK
  • Density: 1.9±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK4/6-IN-9

CDK4/6-IN-9 (compound 10) is a selective CDK4/6 inhibitor with an IC50 of 905 nM for CDK6/cyclin D1. CDK4/6-IN-9 has the potential for multiple myeloma (MM) research[1].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK9-IN-14

CDK9-IN-14 is a potent and selective CDK9 inhibitor with IC50 of 6.92 nM. CDK9-IN-14 has a relatively strong inhibitory effect on MV4;11 cells and in vivo tumor models, and has a good selectivity and a low toxicity and few side effects[1].

  • CAS Number: 2650640-17-6
  • MF: C21H23F2N3O4
  • MW: 419.42
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Antitumor agent-104

Antitumor agent-104 (Compound 9) is an antitumor agent by inhibiting DNA damage repair in tumors. Antitumor agent-104 inhibits PARP1 enzymatic activity and the PAR protein level. Antitumor agent-104 also inhibits the expression of CDK12[1].

  • CAS Number: 2245272-16-4
  • MF: C31H33FN6O3
  • MW: 556.63
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tibremciclib

Tibremciclib is a CDK4 inhibitor with antineoplastic activity[1].

  • CAS Number: 2397678-18-9
  • MF: C28H32F2N8
  • MW: 518.60
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK-IN-12

CDK-IN-12 (Example 20) is a CDK Inhibitor. CDK-IN-12 Inhibits CDK4/6 with IC50 values less than 20 nM[1].

  • CAS Number: 2789680-97-1
  • MF: C26H29FN6OS
  • MW: 492.61
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK5-IN-3

CDK5-IN-3 (compound 11) is a potent and selective CDK5 inhibitor, with IC50s of 0.6 nM and 18 nM for CDK5/p25 and CDK2/CycA, respectively. CDK5-IN-3 can be used for the research of autosomal dominant polycystic kidney disease (ADPKD)[1].

  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-14

Cdc7-IN-14 (compound 82) is a potent CDC7 inhibitor with an IC50 of <1 nM. Cdc7-IN-14 has the potential for the research of cancer[1].

  • CAS Number: 2764866-21-7
  • MF: C18H20N4O2S
  • MW: 356.44
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CKI-7 HCl

CKI-7 is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 is a selective Cdc7 kinase inhibitor. CKI-7 also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].

  • CAS Number: 1177141-67-1
  • MF: C11H14Cl3N3O2S
  • MW: 358.67200
  • Catalog: Casein Kinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

M2N12

M2N12 is a potent and highly selective cell division cycle 25C protein phosphatase (Cdc25C) inhibitor with an IC50 value of 0.09  μM. M2N12 also has promising activity against Cdc25A and Cdc25B with IC50 values of  0.53  μM and 1.39 μM. Anti-tumor activity[1].

  • CAS Number: 2376577-06-7
  • MF: C20H16ClN5O2
  • MW: 393.83
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-9

Cdc7-IN-9 is a potent Cdc7 inhibitor and can be used for cancer research[1].

  • CAS Number: 2649407-21-4
  • MF: C15H17N5OS
  • MW: 315.39
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

FLT3/ITD-IN-4

FLT3/ITD-IN-4 (Compound 16) is a selective FMS-like tyrosine kinase 3 internal tandem duplications (FLT3-ITD) inhibitor with an IC50 of 2.3 nM. FLT3/ITD-IN-4 can be used for acute myeloid leukemia research[1].

  • CAS Number: 2278278-04-7
  • MF: C25H22N4O5
  • MW: 458.47
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK12-IN-6

CDK12-IN-6, a pyrazolotriazine, is a potent CDK12 inhibitor with an IC50 of 1.19 μM at high ATP (2 mM). CDK12-IN-6 has no effect on CDK2/Cyclin E (IC50>20 μM) and CDK9/Cyclin T1 (IC50>20 μM) at high ATP (2 mM) (WO2021116178A1)[1].

  • CAS Number: 2651196-71-1
  • MF: C20H21F2N9
  • MW: 425.44
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Indirubin-3′-oxime

Indirubin-3′-oxime (IDR3O), a synthetic derivative of indirubin, is a potent inhibitor of cyclin-dependent kinases (CDKs) and glycogen synthase kinase 3β (GSK3β). Indirubin-3′-oxime directly inhibits the activity of all three isoforms of JNK (JNK1, JNK2, and JNK3), with IC50s of 0.8 μM, 1.4 μM, and 1.0 μM, respectively. Indirubin-3′-oxime can enhance height growth via activation of Wnt/β-catenin signaling in chondrocytes[1][2][3].

  • CAS Number: 667463-82-3
  • MF: C16H11N3O2
  • MW: 277.28
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Casein Kinase inhibitor A51

Casein Kinase inhibitor A51 (CKIα inhibitor A51) is a novel pan-specific CKI (CSNK1) inhibitor (Kd=0.5-20 nM, CKIα Kd=5.3 nM) that co-targets the transcriptional kinases CDK7 and CDK9, with hardly inhibition of CDK8, CDK13, CDK11a, CDK11b, and CDK19; target both CDK7 and CDK9 with low nM Kd values; induces leukemia cell apoptosis at <160 nM, in correlation to the capacity to stabilize p53; shows high and selective sensitivity against leukemic CFUs in colony-forming unit (CFU) assay, without effect on normal hematopoietic CFUs; blocking CKIα together with CDK7 and/or CDK9 synergistically stabilize p53, deprive leukemia cells of survival and proliferation-maintaining SE-driven oncogenes, induce apoptosis, abolishes the expression of MYC, MDM2, and the anti-apoptotic oncogene MCL1; demonstrates therapeutic efficacy with preserved hematopoiesis and leukemia cure potential in AML mouse models.

  • CAS Number: 2079068-74-7
  • MF: C18H25ClN6
  • MW: 360.89
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

AZ5576

AZ5576 is a potent and highly selective CDK9 inhibitor. AZ5576 can be used for hematological Malignancy research[1].

  • CAS Number: 2751721-40-9
  • MF: C21H24FN3O3
  • MW: 385.43
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

HTH-01-091

HTH-01-091 is a potent and selective, cell-permeable, ATP-competitive MELK inhibitor with biochemical IC50 of 10.5 nM; displays no significant activity for PIK3CA, mTOR, GSK3A and CDK7 (IC50>600 nM); exhibits substantially improved kinome selectivity in comparison with OTSSP167; induces MELK degradation, but demonstrates poor antiproliferative effects in basal-like breast cancer cell lines.

  • CAS Number: 2000209-42-5
  • MF: C26H28Cl2N4O2
  • MW: 499.436
  • Catalog: RIP kinase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK7-IN-1

CDK7-IN-1, an analog of YKL-5-124, is a cyclin-dependent kinase 7 (cdk7) inhibitor, with an IC50 of less than 100 nM, extracted from patent WO 2016105528 A2, Compound 215[1].

  • CAS Number: 1957203-02-9
  • MF: C28H35N7O3
  • MW: 517.62
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK7-IN-11

CDK7-IN-11 is an orally active CDK7 inhibitor. CDK7-IN-11 exhibits high CDK7 inhibitory activity with IC50 value of 4.2 nM. CDK7-IN-11 can be effectively used for the research of diseases associated with CDK7[1].

  • CAS Number: 2414896-32-3
  • MF: C26H28N6O2S
  • MW: 488.60
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PD 0332991-d8

Palbociclib D8 (PD 0332991 D8) is a deuterium labeled Palbociclib. Palbociclib is a selective and orally active CDK4 and CDK6 inhibitor with IC50s of 11 and 16 nM, respectively. Palbociclib has no activity against other protein kinases. Palbociclib has potently anticancer activities[1].

  • CAS Number: 1628752-83-9
  • MF: C24H21D8N7O2
  • MW: 455.58
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A