GT19630
Based on 1 Customer Validation
GT19630 is an orally active c-Myc PROTAC targeted degrader based on the cereblon E3 ubiquitin ligase, with an IC50 of 1.5 nM against human c-Myc. GT19630 mediates the degradation of MYC, GSPT1, GSPT2, CK1 alpha, N-Myc, B7-H3 and XIAP, and disrupts the MYC-GSPT1 synergistic regulatory feedback loop. GT19630 inhibits cell proliferation, blocks S-phase progression of the cell cycle, promotes cell apoptosis, reduces cell migration capacity, induces integrated stress response, and blocks oxidative phosphorylation by inhibiting the TCA cycle. GT19630 can be used in the research of Myc-driven hematological cancers, small cell lung cancer, breast cancer, TP53-mutant cancers, and venetoclax-resistant cancers.
(Pink: c-Myc ligand (HY-168685); Blue: Cereblon ligand (HY-W093472); Black: linker (HY-W015808)).
For research use only. We do not sell to patients.
- Purity: 98.85%
- CAS No.: 2883535-99-5
- Formula: C35H30N6O5
- Molecular Weight:614.65
-
Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
All PROTACs Isoforms
More
Biological Activity
|
14390 1.5 nM (IC50) |
13593 |
14355 |
14391 |
14133 |
14392 |
XIAP |
GT19630 selectively degrades c-Myc protein in HL60 AML cells with an IC50 of 1.5 nM, which is ~35-fold more potent than its activity in TF-1 erythroid progenitor cells (IC50 = 52.5 nM)[1].
GT19630 potently inhibits HL60 AML cell proliferation with an IC50 of 0.33 nM, demonstrating >100-fold selectivity over normal myeloid bone marrow colony-forming cells (IC50 = 40.2 nM) and ~79-fold selectivity over GM-CSF-stimulated TF-1 erythroid progenitor cells (IC50 = 26.2 nM)[1].
GT19630 (0.75-3 nM; 4-48 h) potently degrades MYC in BT549 and CAMA1 breast cancer cell lines, with degradation initiating at 0.75 nM (BT549) or 1.5 nM (CAMA1) by 48 h, and complete degradation achieved with 3 nM by 24 h[2].
GT19630 (0-100 nM; 5 days) inhibits proliferation of 14 diverse human breast cancer cell lines with IC50 values ranging from 1 to 100 nM, and exhibits consistent activity across major breast cancer molecular subtypes[2].
GT19630 (0.75-3 nM; 48 h) downregulates XIAP protein expression in BT549, CAMA1, and MDA-MB-468 breast cancer cell lines following 48 h treatment with 0.75, 1.5, or 3 nM[2].
GT19630 potently inhibits the proliferation of HL-60 acute myeloid leukemia cells with an IC50 of 0.33 nM[3].
GT19630 potently degrades c-Myc protein in HL-60 acute myeloid leukemia cells with an IC50 of 1.5 nM, and this degradation is dependent on proteasome activity[5].
GT19630 (salt form GT19715) potently inhibits HL-60 acute myeloid leukemia cell viability with an IC50 of 1.8 nM[5].
GT19630 selectively degrades GSPT1/GSPT2 (IC90 <1 nM) and CK1α (IC90 <10 nM) but does not degrade IKZF1/Ikaros in HL60 AML cells[1].
GT19630 (100 µM down to serial 3-fold dilutions; 195 min total) binds to human CRBN with high affinity, exhibiting an IC50 of 26.9 nM in an HTRF assay[4].
GT19630 (10 nM; 8 h) induces proteasome-dependent, sustained degradation of both MYC and GSPT1 proteins in HL-60 AML cells at low nanomolar concentrations[4].
GT19630 (variable concentrations; 24 h) induces significant stop-codon readthrough of MYC mRNA in HL-60 and HEK293T cells expressing a MYC-TGA-stop-EGFP reporter[4].
GT19630 (1-5nM; 24 h) induces the integrated stress response in HL-60 GTS AML cells by upregulating ATF4 and ATF3 and activating stress-related gene pathways[4].
GT19630 (5 nM; 12 h) potently inhibits oxidative phosphorylation and glycolysis in HL-60 GTS AML cells, reducing OCR, ECAR, and ATP-linked respiration[4].
GT19630 (5 nM; 12 h) disrupts the TCA cycle in HL-60 GTS AML cells by reducing glutamine metabolism and citrate flux, leading to accumulation of glycolysis intermediates[4].
GT19630 (5 nM; 12 h) decelerates TCA cycle flux in HL-60 GTS AML cells at the stages of glutamate synthesis and citrate synthesis, impairing mitochondrial respiration[4].
GT19630 (variable concentrations; 48 h) induces potent, TP53-agnostic anti-proliferative and apoptotic effects in most blood cancer and SCLC cell lines (IC50 <100 nM), with a therapeutic window relative to normal hematopoietic progenitors; efficacy is dependent on MYC degradation, with resistance in cells carrying a MYCp.T58I mutation[4].
GT19630 (64 nM; 72 h) induces greater cell death in AML LSPCs than normal NBM HSPCs, with TP53-agnostic activity, and reduces MYC protein levels more profoundly in AML LSPCs than normal HSPCs[4].
Biotinylated GT19630 binds directly to c-Myc protein in a cell-free in vitro affinity purification assay[5].
GT19630 (3-12 nM; 48 h) induces S phase cell cycle arrest in BT549, T47D, and MDA-MB-468 breast cancer cell lines following 48 h treatment with 3, 6, or 12 nM[2].
GT19630 (3.1-10000 nM; 48 h) induces apoptosis in T47D, CAMA1, BT549, MDA-MB-468, HCC70, and SKBR3 breast cancer cell lines after 48 h, with greater activity in cell lines with lower proliferation IC50 values[2].
GT19630 (0.75-3 nM) degrades the negative immune checkpoint protein B7-H3 in BT549, CAMA1, and MDA-MB-468 breast cancer cell lines, with concentration-dependent reduction in protein levels and no effect on mRNA expression[2].
GT19630 (3 nM; 24 h pre-treatment, 10-16 h migration) potently inhibits migration of BT549, CAMA1, and MDA-MB-468 breast cancer cell lines following 24 h pre-treatment with 3 nM, with the effect independent of apoptosis induction[2].
GT19630 (low nanomolar concentrations) exerts multifunctional antitumor effects in breast cancer cell lines, including inhibition of proliferation, induction of apoptosis, suppression of migration, degradation of B7-H3, activation of the integrated stress response, and disruption of oxidative phosphorylation[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
-
Cell Line:BT549, CAMA1 breast cancer cell lines
-
Concentration:0.75-3 nM (48 h incubation); 3 nM (4, 8, 24 h incubation)
-
Incubation Time:48 h (0.75, 1.5, 3 nM); 4, 8, 24 h (3 nM)
-
Result:Induced concentration-dependent MYC degradation, with degradation beginning at 0.75 nM in BT549 cells and at 1.5 nM in CAMA1 cells after 48 h.
Began MYC degradation as early as 8 h in both cell lines with 3 nM treatment, with no visible MYC bands detected by 24 h.
-
Cell Line:14 human breast cancer cell lines (luminal, HER2-positive, triple-negative subtypes)
-
Concentration:0-100 nM
-
Incubation Time:5 days
-
Result:Inhibited cell proliferation across all 14 breast cancer cell lines, with IC50 values ranging from 1 to 100 nM.
Exhibited similar anti-proliferative activity across luminal, HER2-positive, and triple-negative breast cancer subtypes.
-
Cell Line:BT549, T47D, MDA-MB-468 breast cancer cell lines
-
Concentration:3-12 nM
-
Incubation Time:48 h
-
Result:Resulted in accumulation of cells in the S phase of the cell cycle in all three cell lines.
Decreased the proportion of cells in the G1/G0 and G2/M phases in all three cell lines tested.
-
Cell Line:T47D, CAMA1, BT549, MDA-MB-468, HCC70, SKBR3 breast cancer cell lines
-
Concentration:3.1-12.5 nM (T47D, CAMA1, BT549, MDA-MB-468); 25-100 nM (HCC70); 2500-10000 nM (SKBR3)
-
Incubation Time:48 h
-
Result:Induced apoptosis in all six cell lines tested, with the extent of apoptosis dependent on cell line, concentration, and incubation time.
Showed greater susceptibility to apoptosis in cell lines with lower proliferation IC50 values (≤5 nM: T47D, CAMA1, BT549, MDA-MB-468), while cell lines with higher IC50 values (>40 nM: HCC70, SKBR3) were more resistant.
-
Cell Line:BT549, CAMA1, MDA-MB-468 breast cancer cell lines
-
Concentration:0.75-3 nM
-
Incubation Time:48 h
-
Result:Decreased XIAP protein expression in all three cell lines in a concentration-dependent manner.
Showed no consistent effect on XIAP mRNA expression across the cell lines.
-
Cell Line:BT549, CAMA1, MDA-MB-468 breast cancer cell lines
-
Concentration:0.75-3 nM (Western blot/ELISA); 3 nM (preliminary array screening)
-
Incubation Time:48 h (preliminary array screening)
-
Result:Decreased B7-H3 protein expression in all three cell lines in a concentration-dependent manner, as measured by both Western blot and ELISA.
Did not affect B7-H3 mRNA expression.
-
Cell Line:BT549, CAMA1, MDA-MB-468 breast cancer cell lines
-
Concentration:3 nM
-
Incubation Time:24 h pre-treatment; 10-16 h migration incubation
-
Result:Significantly reduced cell migration in all three cell lines tested.
Showed the decreased migration was not due to apoptosis, as no significant apoptosis was observed over the migration assay time course.
-
Cell Line:HL-60 AML cells (MYC-amplified)
-
Concentration:10 nM (with 50 nM MLN9708); low nanomolar concentrations (dose-dependent)
-
Incubation Time:8 h (with MLN9708); variable times (time-dependent); sustained up to 48 h post-washout
-
Result:Profoundly reduced MYC protein levels, with this reduction completely rescued by co-treatment with proteasome inhibitors.
Reduced MYC in a dose- and time-dependent manner at low nanomolar concentrations, with reduced MYC levels sustained up to 48 hours after washout.
Degraded GSPT1 protein, unlike the selective GSPT1 degrader CC-90009 which did not affect MYC levels.
-
Cell Line:HL-60 GT19630-sensitive (GTS) AML cells
-
Concentration:1 nM; 2 nM; 5nM (western blotting); 5 nM (RNA-seq)
-
Incubation Time:24 h (western blotting); 12 h (RNA-seq)
-
Result:Upregulated ATF4 and ATF3 protein levels.
Led to significant upregulation of ISR, stress response, and endoplasmic reticulum stress pathways as revealed by RNA-seq and GSEA.
-
Cell Line:diverse cancer cell lines (blood cancers, SCLCs, TNBCs, gliomas), normal erythroid or myeloid progenitors
-
Concentration:variable concentrations
-
Incubation Time:48 h
-
Result:Inhibited proliferation of most blood cancer and SCLC cell lines with IC50 values below 100 nM.
Induced apoptosis with IC50 values ≤10 nM in most cell lines.
Showed higher IC50 values (43-44 nM) in normal erythroid or myeloid progenitors compared to cancer cell lines.
Exhibited TP53-agnostic efficacy in myeloid and lymphoid cell lines, except Raji Burkitt’s lymphoma cells (harboring a MYC p.T58I mutation) which were resistant.
Induced significantly greater apoptosis in MYC-overexpressing OCI-AML3 cells compared to control cells.
GT19630 (0.1-1 mg/kg; i.p.; twice daily; i.p.; once daily (1 mg/kg)) significantly reduces HL-60 tumor volumes and MYC protein levels in BALB/c nude mice[4].
GT19630 (0.3-3 mg/kg; i.p.; twice daily) significantly reduces MM.1S tumor volumes in NOD/SCID mice[4].
GT19870 (3-12 mg/kg; p.o.; once daily) significantly reduces NCI H526 tumor volumes and MYC protein levels in BALB/c nude mice[4].
GT19870 (3-12 mg/kg; p.o.; once daily) significantly reduces 22RV1 tumor volumes and MYC protein levels in BALB/c nude mice[4].
GT19630 (3 mg/kg; i.p.; once daily) eradicates relapsed AML PDX cells in NOD/SCID mice[4].
GT19630 (3 mg/kg; i.p.; three times weekly; 2 weeks on/1 week off cycles) reduces leukemia burden and prolongs survival by >300% in venetoclax-resistant MV4;11 AML in NSG mice[4].
GT19630 (0.3 mg/kg; twice daily) degrades c-Myc and GSPT1 and inhibits tumor growth in an HL-60 acute myeloid leukemia xenograft model[5].
GT19630 (3 mg/kg; i.p.; three times weekly; 2 weeks on/1 week off cycles) induces reversible myelosuppression with minimal body weight loss in humanized CrbnI391V mice, with no observed mortality[4].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
-
Animal Model:NOD/SCID mice[4]
-
Dosage:1 mg/kg; 3 mg/kg
-
Administration:i.p.; twice daily
-
Result:Nearly completely eradicated circulating CD20-positive cells.
Ensured 100% survival of mice on day 42 at 3 mg/kg dose, compared with 20% survival in vehicle-treated controls, resulting in significantly prolonged survival.
-
Animal Model:BALB/c nude mice[4]
-
Dosage:0.1 mg/kg; 0.3 mg/kg; 1 mg/kg
-
Administration:i.p.; twice daily (0.1, 0.3, 1 mg/kg); i.p.; once daily (1 mg/kg)
-
Result:Reduced tumor volumes in a dose-dependent manner, with significant suppression across all treatment groups compared to vehicle.
Reduced MYC protein levels in tumors, with the reduction sustained for at least 24-48 hours after a single injection.
-
Animal Model:NOD/SCID mice[4]
-
Dosage:0.3 mg/kg; 1 mg/kg; 3 mg/kg
-
Administration:i.p.; twice daily
-
Result:Significantly reduced MM.1S tumor volumes at all dose levels compared to vehicle, even below baseline.
-
Animal Model:BALB/c nude mice (female, 4-6 weeks old)[4]
-
Dosage:3 mg/kg; 6 mg/kg; 12 mg/kg
-
Administration:p.o.; once daily
-
Result:Significantly reduced NCI H526 tumor volumes, with the 12 mg/kg group showing the strongest suppression.
Reduced MYC protein levels in tumors.
-
Animal Model:BALB/c nude mice (female, 4-6 weeks old)[4]
-
Dosage:3 mg/kg; 6 mg/kg; 12 mg/kg
-
Administration:p.o.; once daily
-
Result:Significantly reduced 22RV1 tumor volumes, with the 6 mg/kg and 12 mg/kg groups showing strong suppression.
Reduced MYC protein levels in tumors.
-
Animal Model:NOD/SCID mice[4]
-
Dosage:3 mg/kg
-
Administration:i.p.; once daily
-
Result:Eradicated AML cells in circulation, bone marrow, and spleens.
Resulted in significantly reduced spleen weights compared to vehicle treatment.
-
Animal Model:NSG mice[4]
-
Dosage:3 mg/kg
-
Administration:i.p.; three times weekly; 2 weeks on/1 week off cycles
-
Result:Significantly reduced leukemia burden in both venetoclax-sensitive and venetoclax-resistant groups.
Profoundly reduced AML cells in bone marrow and spleens.
Greatly improved survival: median overall survival was prolonged from 37 days to 119 days in the venetoclax-resistant group, and treated venetoclax-sensitive mice had not reached median survival by study end.
-
Animal Model:C57BL/6 CrbnWT mice; C57BL/6 CrbnI391V (humanized Crbn) mice[4]
-
Dosage:0.3 mg/kg; 3 mg/kg
-
Administration:i.p.; three times weekly; 2 weeks on/1 week off cycles
-
Result:Decreased MYC protein levels in bone marrow cells of CrbnI391V but not CrbnWT mice.
Decreased white blood cell counts in CrbnI391V mice treated with 3 mg/kg, while hemoglobin and platelet levels were unchanged.
Decreased body weights by a maximum of ~5% during treatment, with no deaths or obvious adverse events observed.
Increased murine bone marrow CD45-positive cells significantly post-treatment in CrbnI391V mice, suggesting recovery from myelosuppression.
-
Animal Model:xenograft model[5]
-
Dosage:0.3 mg/kg
-
Administration:twice daily
-
Result:Degraded c-Myc and GSPT1 proteins.
Inhibited tumor growth.
Chemical Information
-
CAS No. 2883535-99-5
-
Appearance Solid
-
Molecular Weight 614.65
-
Formula C35H30N6O5
-
Color White to off-white
-
SMILES
O=C(C1=CC=C2C(N(C3C(NC(CC3)=O)=O)CC2=C1)=O)NCC4=CC=C(CNC(CN5C6=C(C7=CC=CC=C75)C=CC=N6)=O)C=C4
-
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
DMSO : 100 mg/mL (162.69 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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.
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.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Please enter the basic information of animal experiments:
-
-
-
-
Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
-
%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
-
%+
-
+%Tween-80 + +
-
%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
-
Data Sheet (299 KB)
-
SDS (254 KB)
- English - EN (254 KB)
- Français - FR (254 KB)
- Deutsch - DE (254 KB)
- Norwegian - NO (254 KB)
- Español - ES (254 KB)
- Swedish - SV (254 KB)
- Italian - IT (254 KB)
- Korean - KR (254 KB)
- Portuguese - PT (254 KB)
-
Handling Instructions (2659 KB)
References
[2]. Tang M, et al. Targeting MYC for the treatment of breast cancer: use of the novel MYC-GSPT1 degrader, GT19630. Investigational new drugs. 2025 Feb;43(1):167-179. [Content Brief]
[3]. Lin Q, et al. Cancer Biology of GSPT1: Mechanisms and Targeted Therapy Opportunities of Molecular Glue Degraders. Advanced science (Weinheim, Baden-Wurttemberg, Germany). 2025 Dec;12(47):e11789. [Content Brief]
[4].
Nishida Y, et al. Dual MYC and GSPT1 Protein Degrader for MYC-Driven Cancers. bioRxiv. 2025 Apr 27.
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 | 1.6269 mL | 8.1347 mL | 16.2694 mL | 40.6736 mL |
| 5 mM | 0.3254 mL | 1.6269 mL | 3.2539 mL | 8.1347 mL | |
| 10 mM | 0.1627 mL | 0.8135 mL | 1.6269 mL | 4.0674 mL | |
| 15 mM | 0.1085 mL | 0.5423 mL | 1.0846 mL | 2.7116 mL | |
| 20 mM | 0.0813 mL | 0.4067 mL | 0.8135 mL | 2.0337 mL | |
| 25 mM | 0.0651 mL | 0.3254 mL | 0.6508 mL | 1.6269 mL | |
| 30 mM | 0.0542 mL | 0.2712 mL | 0.5423 mL | 1.3558 mL | |
| 40 mM | 0.0407 mL | 0.2034 mL | 0.4067 mL | 1.0168 mL | |
| 50 mM | 0.0325 mL | 0.1627 mL | 0.3254 mL | 0.8135 mL | |
| 60 mM | 0.0271 mL | 0.1356 mL | 0.2712 mL | 0.6779 mL | |
| 80 mM | 0.0203 mL | 0.1017 mL | 0.2034 mL | 0.5084 mL | |
| 100 mM | 0.0163 mL | 0.0813 mL | 0.1627 mL | 0.4067 mL |