1. PROTAC Protein Tyrosine Kinase/RTK Neuronal Signaling
  2. PROTACs Trk Receptor
  3. CG428

CG428 is a potent and selective CRBN-dependent tropomyosin receptor kinase (TRK) PROTAC degrader that has anti-tumor activity. CG428 reduces levels of the tropomyosin 3 TPM3-TRKA fusion protein in KM12 colorectal carcinoma cells (DC50 = 0.36 nM) and inhibits downstream PLCγ1 phosphorylation (IC50 = 0.33 nM). CG428 has a higher binding affinity for TRKA than TRKB and TRKC (Kd = 1 nM, 28 nM and 4.2 nM, respectively). CG428 can be used for the research of colorectal carcinoma.
(Pink: Trk Receptor ligand (HY-118271); Blue: Cereblon ligand (HY-41547); Black: linker (HY-W067489)).

For research use only. We do not sell to patients.

CG428

CG428 Chemical Structure

CAS No. : 2412055-93-5

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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Description

CG428 is a potent and selective CRBN-dependent tropomyosin receptor kinase (TRK) PROTAC degrader that has anti-tumor activity. CG428 reduces levels of the tropomyosin 3 TPM3-TRKA fusion protein in KM12 colorectal carcinoma cells (DC50 = 0.36 nM) and inhibits downstream PLCγ1 phosphorylation (IC50 = 0.33 nM). CG428 has a higher binding affinity for TRKA than TRKB and TRKC (Kd = 1 nM, 28 nM and 4.2 nM, respectively). CG428 can be used for the research of colorectal carcinoma[1]. (Pink: Trk Receptor ligand (HY-118271); Blue: Cereblon ligand (HY-41547); Black: linker (HY-W067489)).

IC50 & Target[1]

TrkA

1 nM (Kd)

TrkC

4.2 nM (Kd)

TrkB

28 nM (Kd)

Cereblon

 

Cellular Effect
Cell Line Type Value Description References
KM12 IC50
52 nM
Compound: 6; CG428
Antiproliferative activity against human KM12 cells assessed as reduction in cell viability measured after 3 days by Celltiter-Glo assay
Antiproliferative activity against human KM12 cells assessed as reduction in cell viability measured after 3 days by Celltiter-Glo assay
[PMID: 33058680]
In Vitro

CG428 binds with high affinity to recombinant TRKA, TRKB, and TRKC kinases, with Kd values of 1.0, 28.0 and 4.2 nM[1].
CG428 degrades endogenous TPM3-TRKA fusion protein (DC50 = 0.36 nM) and inhibits PLCγ1 phosphorylation (IC50 = 0.33 nM) in KM12 cells[1].
CG428 potently degrades endogenous wild-type TRKA in HEL cells with a DC50 of 2.23 nM[1].
CG428 (0.7-500 nM; 6 h) exhibits reduced potency for degradation of ectopically expressed AGBL4-TRKB and ETV6-TRKC fusion protein in KM12 cells, with a hook effect at high concentrations[1].
CG428 potently inhibits the growth of KM12 cells with an IC50 of 2.9 nM[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Western Blot Analysis[1]

Cell Line: KM12 human colorectal carcinoma cells
Concentration: 0.04, 0.12, 0.4, 1.1, 3.3, 10, 30 nM
Incubation Time: 6 h
Result: Induced potent degradation of TPM3-TRKA with a DC50 of 0.36 ± 0.06 nM.
Inhibited downstream PLCγ1 phosphorylation with an IC50 of 0.33 ± 0.06 nM.
Caused 96 ± 3% TPM3-TRKA degradation at 10 nM.
Caused 82 ± 2% TPM3-TRKA degradation at 1 nM.
Caused 46 ± 6% TPM3-TRKA degradation at 0.1 nM.
Parmacokinetics
Species Dose Route Cmax Tmax T1/2
Mice[1] 10 mg/kg i.p. 1640 nM 1 h 0.9 h
In Vivo

CG428 (10 mg/kg; i.p.; single dose) demonstrates good plasma exposure in male ICR mice following a single 10 mg/kg intraperitoneal administration, with concentrations remaining well above its in vitro DC50 up to 8 h post dosing[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: ICR (male)[1]
Dosage: 10 mg/kg
Administration: i.p.; single dose
Result: Reached a maximum plasma concentration of 1640 ± 120 nM at 1 h post dosing.
Plasma concentration was 12.4 ± 13.6 nM at 8 h post dosing.
Exhibited a half-life of 0.9 h.
Clinical Trial
Molecular Weight

814.86

Formula

C43H43FN10O6

CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C1N(C(CC2)C(NC2=O)=O)C(C3=C1C=CC=C3NCCOCCC(N4CCN(C5=NC(C6=CN=C7C=CC(N8[C@@H](C9=CC=CC(F)=C9)CCC8)=NN76)=CC=C5)CC4)=O)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (122.72 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.2272 mL 6.1360 mL 12.2720 mL
5 mM 0.2454 mL 1.2272 mL 2.4544 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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In Vivo Dissolution Calculator
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
Purity & Documentation

Purity: 98.26%

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.2272 mL 6.1360 mL 12.2720 mL 30.6801 mL
5 mM 0.2454 mL 1.2272 mL 2.4544 mL 6.1360 mL
10 mM 0.1227 mL 0.6136 mL 1.2272 mL 3.0680 mL
15 mM 0.0818 mL 0.4091 mL 0.8181 mL 2.0453 mL
20 mM 0.0614 mL 0.3068 mL 0.6136 mL 1.5340 mL
25 mM 0.0491 mL 0.2454 mL 0.4909 mL 1.2272 mL
30 mM 0.0409 mL 0.2045 mL 0.4091 mL 1.0227 mL
40 mM 0.0307 mL 0.1534 mL 0.3068 mL 0.7670 mL
50 mM 0.0245 mL 0.1227 mL 0.2454 mL 0.6136 mL
60 mM 0.0205 mL 0.1023 mL 0.2045 mL 0.5113 mL
80 mM 0.0153 mL 0.0767 mL 0.1534 mL 0.3835 mL
100 mM 0.0123 mL 0.0614 mL 0.1227 mL 0.3068 mL
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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CG428
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