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BET bromodomain inhibitor 1

Cat No.:V38708 Purity: ≥98%
BET bromodomain inhibitor 1 is an orally bioactive, selective BET bromodomain inhibitor (antagonist) with IC50 of 2.6 nM for BRD4.
BET bromodomain inhibitor 1
BET bromodomain inhibitor 1 Chemical Structure CAS No.: 2411226-02-1
Product category: New2
This product is for research use only, not for human use. We do not sell to patients.
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1mg
5mg
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Product Description
BET bromodomain inhibitor 1 is an orally bioactive, selective BET bromodomain inhibitor (antagonist) with IC50 of 2.6 nM for BRD4. BET bromodomain inhibitor 1 binds to BRD2(2), BRD3(2), BRD4(1), BRD4(2) and BRDT(2) with high affinity (Kds are 1.3 nM, 1.0 nM, 3.0 nM, 1.6 nM, 2.1 respectively nM). BET bromodomain inhibitor 1 has anti-cancer effect.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
BET bromodomain inhibitor 1 (compound 38; 31.25-125 nM; 24 hr) induces a more prominent G1 cell cycle arrest [1]. It is very successful to induce dose-dependent suppression of c-Myc expression and elevation of p21 levels using BET bromodomain Inhibitor 1 (31.25-500 nM; 6 or 24 hours) [1]. Expressions of c-Myc, BCL-2, and CDK6 are dramatically reduced by BET bromodomain Inhibitor 1 (31.25-125 nM; 6 hours) [1]. Five cytochrome P450 enzymes (IC50>20 μM) are not inhibited by BET bromodomain inhibitor 1 [1]. BET Bromo Domain Inhibitor 1 is around 1500 times more selective for BRD4(1) than EP300 (IC50=3857 nM), and it shows good selectivity for the BET Bromo domain family over other Bromo domains[1]. With an IC50 value of 2.4, 4.8, 17.6, and 15.1 nM, respectively, BET bromodomain inhibitor 1 significantly inhibits the proliferation of acute myeloid leukemia cell line MV4-11, acute leukemia cell lines Kasumi-1 and RS-4-11, and multiple myeloma cancer cell line MM1.S cells[1].
ln Vivo
Compound 38, orally administered daily for 28 days, exhibited a greater anticancer efficacy and totally suppressed tumor development at 6.25 and 12.5 mg/kg of BET bromodomain inhibitor 1. (TGI) is 99.7%. [1]. For rats and mice, respectively, BET bromodomain inhibitor 1 (1 mg/kg; IV) showed T1/2 of 1.3 and 0.9 hours, CL of 21.5 and 15.3 mL/min·kg, and Vss of 1464 and 15.3 mL/min·kg [1]. Rats treated orally with BET bromodomain inhibitor 1 (3 mg/kg) had an AUC of 884 ng·h/mL, a Cmax of 159 ng/mL, and a T1/2 of 3.6 hours [1]. The oral BET bromodomain inhibitor 1 (1.3 mg/kg) has an AUC of 1710 ng·h/mL in mice, a T1/2 of 1.3 hours, and a Cmax of 399 ng/mL [1].
Cell Assay
Cell cycle analysis[1]
Cell Types: MV-4-11 Cell
Tested Concentrations: 31.25, 62.5, 125 nM
Incubation Duration: 24 hrs (hours)
Experimental Results: Result in more obvious G1 phase cell cycle arrest.

Western Blot Analysis[1]
Cell Types: MV-4-11 Cell
Tested Concentrations: 31.25, 62.5, 125, 250, 500 nM
Incubation Duration: 6 or 24 hrs (hours)
Experimental Results: Induction of dose-dependent inhibition of c-Myc expression and upregulation of p21 levels.

RT-PCR[1]
Cell Types: MV-4-11 Cell
Tested Concentrations: 31.25, 62.5, 125 nM
Incubation Duration: 6 hrs (hours)
Experimental Results: Dramatically diminished expression of c-Myc, BCL-2 and CDK6.
Animal Protocol
Animal/Disease Models: MV4-11 mouse xenograft model [1]
Doses: 6.25, 12.5 mg/kg
Route of Administration: oral; daily; 28-day
Experimental Results: demonstrated stronger anti-tumor activity and completely inhibited tumor growth, The tumor growth inhibition (TGI) was 99.7% at 12.5 mg/kg.

Animal/Disease Models: Male SD rat[1]
Doses: 1 mg/kg (pharmacokinetic/PK/PK analysis)
Route of Administration: intravenous (iv) (iv)injection
Experimental Results: T1/2 is 1.3 hrs (hrs (hours)), CL is 21.5 mL/min·kg, Vss is 1464 mL/kg.
References

[1]. Discovery of 8-Methyl-pyrrolo[1,2- a]pyrazin-1(2 H)-one Derivatives as Highly Potent and Selective Bromodomain and Extra-Terminal (BET) Bromodomain Inhibitors. J Med Chem. 2020 Apr 23;63(8):3956-3975.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C22H19F2N3O4S
Molecular Weight
459.47
Exact Mass
459.106
CAS #
2411226-02-1
PubChem CID
146047136
Appearance
White to off-white solid powder
LogP
2.7
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
7
Rotatable Bond Count
6
Heavy Atom Count
32
Complexity
821
Defined Atom Stereocenter Count
0
SMILES
CCS(=O)(CC1C=NC(OC2C=CC(=CC=2F)F)=C(C2=CC(C)=C3C(NC=CN23)=O)C=1)=O
InChi Key
UETQFSCWDMJWMM-UHFFFAOYSA-N
InChi Code
InChI=1S/C22H19F2N3O4S/c1-3-32(29,30)12-14-9-16(18-8-13(2)20-21(28)25-6-7-27(18)20)22(26-11-14)31-19-5-4-15(23)10-17(19)24/h4-11H,3,12H2,1-2H3,(H,25,28)
Chemical Name
6-[2-(2,4-difluorophenoxy)-5-(ethylsulfonylmethyl)pyridin-3-yl]-8-methyl-2H-pyrrolo[1,2-a]pyrazin-1-one
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)
Solubility Data
Solubility (In Vitro)
DMSO : ~62.5 mg/mL (~136.03 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (5.44 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 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

Solubility in Formulation 2: ≥ 2.08 mg/mL (4.53 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.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (4.53 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in 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 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.1764 mL 10.8821 mL 21.7642 mL
5 mM 0.4353 mL 2.1764 mL 4.3528 mL
10 mM 0.2176 mL 1.0882 mL 2.1764 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.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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