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Cdk1/2 Inhibitor III - CAS 443798-55-8 - Calbiochem

The Cdk1/2 Inhibitor III, also referenced under CAS 443798-55-8, controls the biological activity of Cdk1/2. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

Cdk1/2 Inhibitor III - CAS 443798-55-8 - Calbiochem, 5-Amino-3-((4-(aminosulfonyl)phenyl)amino)-N-(2,6-difluorophenyl)-1H-1,2,4-triazole-1-carbothioamide
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:

Quality Level


≥95% (HPLC)





storage condition

OK to freeze
protect from light




DMSO: 10 mg/mL
THF: soluble
acetone: soluble

shipped in


storage temp.


General description

A cell-permeable triazolo-diamine compound that displays anti-proliferative properties in various human cancer cells (IC50 = 20 nM, 35 nM and 92 nM in HCT-116, HeLa, and A375 cells, respectively). Acts as a highly potent, reversible, ATP-competitive inhibitor of Cdk1/cyclin B and Cdk2/cyclin A (IC50 = 600 pM and 500 pM, respectively) with selectivity over VEGF-R2 (IC50 = 32 nM), GSK-3β (IC50 = 140 nM), and a panel of eight other kinases (IC50 ≥ 1 µM).


1 mg in Plastic ampoule
Packaged under inert gas

Biochem/physiol Actions

Cell permeable: yes
Target IC50: 20 nM, 35 nM and 92 nM for anti-proliferative properties in HCT-116, HeLa, and A375 cells, respectively; 600 pM and 500 pM, against Cdk1/cyclin B and Cdk2/cyclin A, respectively
Primary Target
Cdk1/cyclin B, Cdk2/cyclin A
Product competes with ATP.
Reversible: yes


Toxicity: Harmful (C)


Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Other Notes

Lin, R., et al. 2005.J. Med. Chem.48, 4208.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Quality

Enter Lot Number to search for Certificate of Quality (COQ).

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Endocytosis mediates the cellular uptake of micronutrients and cell surface proteins. Fast Endophilin-mediated endocytosis, FEME, is not constitutively active but triggered upon receptor activation. High levels of growth factors induce spontaneous FEME, which can be suppressed upon serum starvation. This

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