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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CDK5 inhibitor 20-223

CDK5 inhibitor 20-223 (CP 668863) potent, selective, ATP-competitive CDK2/5 inhibitor with IC50 of 6.0 and 8.8 nM for CDK2/CyclinE and CDK5/p35, with little to no activity against CDK1/4/6/7/9; decreases pRB (S807/811) and pFAK (S732) levels in CRC cell lines, effectively blocks the kinase activity of CDK2 and CDK5 in multiple CRC cell lines; reduces migration of CRC cells, reduces cell growth in a panel of human CRC cell lines with mean IC50 of 362 nM; effectively slows tumor progression in mice models.

  • CAS Number: 865317-30-2
  • MF: C19H19N3O
  • MW: 305.381
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-5

Cdc7-IN-5 (compound I-B) is a potent Cdc7 kinase inhibitor extracted from patent WO2019165473A1, compound I-B. Cdc7 is a serine-threonine protein kinase enzyme which is essential for the initiation of DNA replication in the cell cycle[1].

  • CAS Number: 1402057-86-6
  • MF: C25H23N3O5
  • MW: 445.47
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Voruciclib hydrochloride

Voruciclib hydrochloride is a clinical stage oral CDK9 inhibitor. Voruciclib hydrochloride represses expression of MCL-1 in multiple models of diffuse large B-cell lymphoma (DLBCL)[1].

  • CAS Number: 1000023-05-1
  • MF: C22H20Cl2F3NO5
  • MW: 506.30
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-8

Cdc7-IN-8 is a potent inhibitor of Cdc7. Cdc7 is a serine/threonine kinase which activates MCM promotion by phosphorylating the microchromosome maintenance protein (MCM protein), an important element of the DNA replication initiator. Cdc7-IN-8 has the potential for the research of cancer diseases (extracted from patent WO2021032170A1, compound 1-1/1-2)[1].

  • CAS Number: 2606780-38-3
  • MF: C19H21N5O2
  • MW: 351.40
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-3

Cdc7-IN-3 (compound I-A) is a potent Cdc7 kinase inhibitor extracted from patent WO2019165473A1, compound I-B. Cdc7 is a serine-threonine protein kinase enzyme which is essential for the initiation of DNA replication in the cell cycle[1].

  • CAS Number: 1402057-87-7
  • MF: C20H22N4O5
  • MW: 398.41
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DSS30

DSS30 is a P25/CDK5 inhibitor that reduces β-amyloid (Aβ) secretion by inhibiting amyloid precursor protein lyase 1 (BACEl) phosphorylation. DSS30 can be used in the study of neurodegenerative diseases such as Alzheimer's disease[1].

  • CAS Number: 883027-32-5
  • MF: C16H14ClNO3S2
  • MW: 367.87
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

JH-XI-10-02

JH-XI-10-02 is a potent and selective degrader of CDK8, with an IC50 of 159 nM, based on PROTAC. JH-XI-10-02 causes proteasomal degradation, does not affect CDK8 mRNA levels. JH-XI-10-02 shows no effect on CDK19[1].

  • CAS Number: 2209085-22-1
  • MF: C53H69N5O9
  • MW: 920.14
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Voruciclib

Voruciclib is a clinical stage orally active and selective CDK inhibitor with Ki values of 0.626 nM-9.1 nM. Voruciclib potently blocks CDK9, the transcriptional regulator of MCL-1. Voruciclib represses expression of MCL-1 in multiple models of diffuse large B-cell lymphoma (DLBCL)[1].

  • CAS Number: 1000023-04-0
  • MF: C22H19ClF3NO5
  • MW: 469.83800
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK1-IN-2

CDK1-IN-2 is a CDK1 inhibitor (IC50: 5.8 μM)[1].

  • CAS Number: 220749-41-7
  • MF: C17H11ClN2O
  • MW: 294.735
  • Catalog: CDK
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: 585.1±50.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 307.7±30.1 °C

CYC-065

CYC065 is a second-generation, orally available ATP-competitive inhibitor of CDK2/CDK 9 kinases.

  • CAS Number: 1070790-89-4
  • MF: C21H31N7O
  • MW: 397.527
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

BI-1622

BI-1622 is an orally active, potent and highly selective HER2 (ERBB2) inhibitor, with an IC50 of 7 nM. BI-1622 shows greater than 25-fold selectivity over EGFR. BI-1622 shows high antitumor efficacy in vivo in xenograft mouse tumor models with engineered H2170 and PC9 cells and had a favorable drug metabolism and pharmacokinetics profile[1].

  • CAS Number: 2681392-19-6
  • MF: C26H24N10O2
  • MW: 508.53
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PNU112455A hydrochloride

PNU112455A hydrochloride is an ATP-competitive CDK2 and CDK5 inhibitor. PNU112455A hydrochloride binds to the ATP site of CDK2 and CDK5 with Kms of 3.6 and 3.2 μM, respectively [1].

  • CAS Number: 21886-12-4
  • MF: C10H12ClN5O2S
  • MW: 301.75300
  • Catalog: CDK
  • Density: 1.532g/cm3
  • Boiling Point: 568.6ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 297.7ºC

Cimpuciclib tosylate

Cimpuciclib tosylate is a selective CDK4 inhibitor (IC50: 0.49 nM) that has anti-tumor activity[1].

  • CAS Number: 2408872-84-2
  • MF: C37H43FN8O4S
  • MW: 714.85
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

N6,N6-dimethyladenine

6-(Dimethylamino)purine is a dual inhibitor of protein kinase and CDK[1][2].

  • CAS Number: 938-55-6
  • MF: C7H9N5
  • MW: 163.180
  • Catalog: CDK
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 427.4±25.0 °C at 760 mmHg
  • Melting Point: 259-262 °C(lit.)
  • Flash Point: 212.3±23.2 °C

Cdc7-IN-12

Cdc7-IN-12 (compound 1) is a potent CDC7 inhibitor with an IC50 of <1 nM. Cdc7-IN-12 shows antiproliferative activities with IC50 of 100-1000 nM in COLO205 cells. Cdc7-IN-12 has the potential for the research of cancer[1].

  • CAS Number: 2764865-33-8
  • MF: C16H14N2O2S
  • MW: 298.36
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK1/Cyc B-IN-1

CDK1/Cyc B-IN-1 (Compound 5) is a selective CDK1/Cyc B complex inhibitor with an IC50 of 97 nM. CDK1/Cyc B-IN-1 triggers apoptosis and G2/M cell cycle arrest. CDK1/Cyc B-IN-1 shows broad-spectrum cytotoxic action against cancer cell lines[1].

  • CAS Number: 2459916-56-2
  • MF: C14H12ClN3O2S2
  • MW: 353.85
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

OTS964

OTS964 is an orally active, high affinity and selective TOPK inhibitor with an IC50 of 28 nM[1]. OTS964 is also a potent inhibitor of the cyclin-dependent kinase CDK11, which binds to CDK11B with a Kd of 40 nM[2].

  • CAS Number: 1338542-14-5
  • MF: C23H24N2O2S
  • MW: 392.51
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Leucettine L41

Leucettine L41 is a potent inhibitor of dual-specificity tyrosine phosphorylation-regulated kinase 1A (DYRK1A), DYRK2, CDC-like kinase 1 (CLK1), and CLK3 (IC50s = 0.04, 0.035, 0.015, and 4.5 µM, respectively)[1]. Leucettine L41 prevents lipid peroxidation and the accumulation of reactive oxygen species (ROS) induced by Aβ25-35 in the hippocampus in a mouse model of Alzheimer’s disease-like toxicity. Leucettine L41 also prevents memory deficits induced by Aβ25-35 in the same model[2].

  • CAS Number: 1112978-84-3
  • MF: C17H13N3O3
  • MW: 307.303
  • Catalog: CDK
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdc7-IN-17

Cdc7-IN-17 is a potent CDC7 inhibitor with an IC50 of <10 μM, extracted from patent WO2018217439A1. Cdc7-IN-17 can be used for cancer research[1].

  • CAS Number: 2253686-94-9
  • MF: C13H15N5OS
  • MW: 289.36
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CDK4/6-IN-10

CDK4/6-IN-10 is a potent, selective and orally active CDK4 and CDK6 inhibitor with IC50s of 22 nM and 10 nM, respectively. CDK4/6-IN-10 shows antitumor activity. CDK4/6-IN-10 has the potential for the research of Multiple myeloma (MM)[1].

  • CAS Number: 2688098-11-3
  • MF: C22H23FN8
  • MW: 418.47
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Garcinone C

Garcinone C, a xanthone derivative, is a natural compound extracted from Garcinia oblongifolia Champ that is used as an anti-inflammatory, analgesia, astringency and granulation-promoting medicine, and has potential cytotoxic effects on certain cancers. Garcinone C stimulates the expression levels of ATR and 4E-BP1, while efficiently inhibiting the expression levels of cyclin B1, cyclin D1, cyclin E2, cdc2, Stat3 and CDK7. Garcinone C significantly inhibits cell viability of the human Nasopharyngeal carcinoma (NPC) cell lines CNE1, CNE2, HK1 and HONE1 in a time‑ and dose‑dependent manner[1].

  • CAS Number: 76996-27-5
  • MF: C23H26O7
  • MW: 414.448
  • Catalog: ATM/ATR
  • Density: 1.367
  • Boiling Point: 689.0±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 239.7±25.0 °C

CDK7-IN-8

CDK7-IN-8 is a potent CDK7 inhibitor with IC50 of 54.29 nM. CDK7-IN-8 has inhibitory effect on certain cancer cells and in vivo tumor models[1].

  • CAS Number: 2654003-64-0
  • MF: C25H38N8O3
  • MW: 498.62
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tanuxiciclib

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

  • CAS Number: 1983983-64-7
  • MF: C15H13FN6O
  • MW: 312.30
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Cdk1/2 Inhibitor III

Cdk1/2 Inhibitor III is a selective Cdk1/2 inhibitor, with an IC50 of 2.1 μM for CDK1/cyclin B[1].

  • CAS Number: 443798-55-8
  • MF: C15H13F2N7O2S2
  • MW: 425.43600
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

N-Benzyl-2-chloro-9-methyl-9H-purin-6-amin

CDK2-IN-13 (Compound 15) is a CDK2 inhibitor with IC50 of 12 µM. CDK2-IN-13 can be used in research of cancer[1].

  • CAS Number: 101622-53-1
  • MF: C13H12ClN5
  • MW: 273.72100
  • Catalog: CDK
  • Density: 1.4g/cm3
  • Boiling Point: 443.1ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 221.8ºC

NSC 625987

NSC 625987 is a specific and high-affinity CDK4 inhibitor with an IC50 of 0.2 μM for CDK4:cyclin D1. NSC 625987 shows >500-fold selectivity for CDK4 over CDK2[1].

  • CAS Number: 141992-47-4
  • MF: C15H13NO2S
  • MW: 271.33400
  • Catalog: CDK
  • Density: 1.32g/cm3
  • Boiling Point: 460.4ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 232.2ºC

Avotaciclib

Avotaciclib (BEY1107) is an orally active cyclin dependent kinase 1 (CDK1) inhibitor. Avotaciclib can be used for the research of cancer[1].

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

Abemaciclib Metabolites M2

Abemaciclib Metabolites M2 is a metabolite of abemaciclib, acts as a potent CDK4 and CDK6 inhibitor, with IC50s in the range of 1-3 nM. Anti-cancer activity[1].

  • CAS Number: 1231930-57-6
  • MF: C25H28F2N8
  • MW: 478.54
  • Catalog: CDK
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

RP106

Aloisine RP106 (compound 38) is a potent inhibitor of Cdk1/cyclin B, Cdk5/p25, and GSK3 with IC50s of 0.70µM, 1.5µM, 0.92 µM, respectively[1].

  • CAS Number: 496864-15-4
  • MF: C16H17N3O
  • MW: 267.32600
  • Catalog: CDK
  • Density: 1.155g/cm3
  • Boiling Point: N/A
  • Melting Point: 182-184ºC
  • Flash Point: N/A

Flavopiridol

Flavopiridol is a broad spectrum and competitive inhibitor of CDKs, inhibiting CDK1, CDK2, CDK4 with IC50s of 30, 170, 100 nM, respectively.

  • CAS Number: 146426-40-6
  • MF: C21H20ClNO5
  • MW: 401.840
  • Catalog: Autophagy
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 603.6±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 318.8±31.5 °C