Olafertinib, formerly known as CK-101 and Olafertinib, is a potent and orally bioavailable EGFR mutant-specific inhibitor. CK-101 specifically and covalently binds to and inhibits specific EGFR mutations, with particularly high selectivity against the T790M mutation; this prevents EGFR mutant-mediated signaling and leads to cell death in EGFR mutant-expressing tumor cells. Compared to some other EGFR inhibitors, CK-101 may have therapeutic benefits in tumors with T790M-mediated drug resistance. References:

Physicochemical Properties

Molecular Formula	C29H28F2N6O2
Molecular Weight	530.5798
Exact Mass	530.224
CAS #	1660963-42-7
Related CAS #	1660963-42-7;
PubChem CID	117909640
Appearance	Light yellow to yellow solid powder
Density	1.4±0.1 g/cm3
Index of Refraction	1.674
LogP	4.14
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	8
Heavy Atom Count	39
Complexity	815
Defined Atom Stereocenter Count	0
InChi Key	IDRGFNPZDVBSSE-UHFFFAOYSA-N
InChi Code	InChI=1S/C29H28F2N6O2/c1-2-25(39)33-21-7-3-5-19(17-21)22-8-4-6-20-18-32-29(35-28(20)22)34-23-9-10-24(27(31)26(23)30)37-13-11-36(12-14-37)15-16-38/h2-10,17-18,38H,1,11-16H2,(H,33,39)(H,32,34,35)
Chemical Name	N-[3-[2-[2,3-difluoro-4-[4-(2-hydroxyethyl)piperazin-1-yl]anilino]quinazolin-8-yl]phenyl]prop-2-enamide
Synonyms	CK-101 CK 101 CK101 RX-518 RX 518 RX518 Olafertinib
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

References

Description: Olafertinib, formerly known as CK-101 and Olafertinib, is a potent and orally bioavailable EGFR mutant-specific inhibitor. CK-101 specifically and covalently binds to and inhibits specific EGFR mutations, with particularly high selectivity against the T790M mutation; this prevents EGFR mutant-mediated signaling and leads to cell death in EGFR mutant-expressing tumor cells. Compared to some other EGFR inhibitors, CK-101 may have therapeutic benefits in tumors with T790M-mediated drug resistance.

Additional Infomation

EGFR Mutant-specific Inhibitor CK-101 is an orally available third-generation and selective inhibitor of certain epidermal growth factor receptor (EGFR) activating mutations, including the resistance mutation T790M, and the L858R and del 19 mutations, with potential antineoplastic activity. Upon administration, the EGFR mutant-specific inhibitor CK-101 specifically and covalently binds to and inhibits selective EGFR mutations, with particularly high selectivity against the T790M mutation, which prevents EGFR mutant-mediated signaling and leads to cell death in EGFR mutant-expressing tumor cells. Compared to some other EGFR inhibitors, CK-101 may have therapeutic benefits in tumors with T790M-mediated drug resistance. This agent shows minimal activity against wild-type EGFR (WT EGFR), and does not cause dose-limiting toxicities that occur during the use of non-selective EGFR inhibitors, which also inhibit WT EGFR. EGFR, a receptor tyrosine kinase mutated in many tumor cell types, plays a key role in tumor cell proliferation and tumor vascularization.

Solubility Data

Solubility (In Vitro)

DMSO : ~125 mg/mL (~235.60 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.08 mg/mL (3.92 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.08 mg/mL (3.92 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.8847 mL	9.4236 mL	18.8473 mL
	5 mM	0.3769 mL	1.8847 mL	3.7695 mL
	10 mM	0.1885 mL	0.9424 mL	1.8847 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.