Voruciclib

Alias: 1000023-04-0 (free base); 2505206-37-9 (malonate)

Cat No.:V28036 Purity: ≥98%

COA Product Data Instructions for use SDS

Voruciclib (formerly known as P1446A-05) is a potent and orally bioavailable CDK4/cyclin-dependent kinase 4 inhibitor with potential anticancer activity.

Voruciclib Chemical Structure CAS No.: 1000023-04-0
Product category: CDK

This product is for research use only, not for human use. We do not sell to patients.

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Top Publications Citing lnvivochem Products

Nature 2021, 597(7874):119-125.

Cell 2020,183:1202-1218.e25.

Science Adv 2022: 8, eabm9427.

Nature 597, 119–125 (2021)

Cell Stem Cell 2020,26(6):845-861.e12.

Science Trans Med 2023,15(701):eadd7872.

STTT 2023,8(1):91.

Cell Reports 2023,42(4):112313

Science Trans Med 2023, 15: eadd7872.

Cancer Cell 2021,39(4):529-547.e7.

Cancer Discov 2022,12(4):1106-1127.

Immunity 2023,56(3):620-634.e11.

J Am Chem Soc 2022,144:21831-21836.

Cell 2020,183:1202-1218.e25.

Science Adv 2022:8,eabm9427.

Nature 2021,597(7874):119-125.

Cell 2020,183:1202-1218.e25.

PNAS Nexus 2022,1(3):pgac063.

ACS Nano 2023,17(10):9110-9125.

Biomaterial 2023 Sep16:302:122333.

Product Description
Bioactivity & Protocols
Physicochemical Properties
Solubility Data
Calculators
Clinical Trial Information
Biological Data

Product Description

Voruciclib (formerly known as P1446A-05) is a potent and orally bioavailable CDK4/cyclin-dependent kinase 4 inhibitor with potential anticancer activity. P1446A-05 has CDK inhibitory values ranging from 0.626 nM to 9.1 nM. It specifically prevents the G1-S phase transition mediated by CDK4, which stops cell cycle and stops the growth of cancer cells. The first kinase to activate in response to mitogenic stimulation is the serine/threonine kinase CDK4, which is found in a complex with D-type G1 cyclins. CDK-cyclin complexes have been demonstrated to phosphorylate the retinoblastoma (Rb) transcription factor in early G1, dislodging histone deacetylase (HDAC), and preventing transcriptional repression.

Biological Activity I Assay Protocols (From Reference)

Targets

CDK9/cyc T2 (Ki = 0.626 nM); CDK9/CycT1 (Ki = 1.68 nM); CDK6/cycD1 (Ki = 2.92 nM); CDK4/Cyc D1 (Ki = 3.96 nM); CDK1/cycB (Ki = 5.4 nM); CDK1/cyc A (Ki = 9.1 nM)

ln Vitro

Voruciclib (0.5-5 µM; 6 hours) exhibits targeted downregulation of MCL-1 in both ABC and GCB subtypes[1].
Voruciclib hydrochloride has ki values of 0.626 nM, 1.68 nM, 2.92 nM, 3.96 nM, 5.4 nM, and 9.1 nM for each target, such as CDK9/cyc T2, CDK9/cyc T1, CDK6/cyc D1, CDK4/cyc D1, CDK1/cyc B, and CDK1/cyc A[1].

ln Vivo

In U2932, RIVA, SU-DHL-4 (six days per week for four weeks) and NU-DHL-1 (five days per week for three weeks) models of DLBCL, the combination of Voruciclib hydrochloride (200 mpk; oral gavage) and Venetoclax (10 mpk, 1 mpk, 50 mpk, and 25 mpk in each of these models, respectively) leads to enhanced tumor growth inhibition compared to either drug alone1.

Cell Assay

Cell Line: U2932, RIVA, OCI-LY10 cells (ABC subtype), NU-DHL-1, SU-DHL-4, SU-DHL-6 cells (GCB subtype)
Concentration: 0.5 µM, 1 µM, 2 µM, 3 µM, 4 µM, 5 µM
Incubation Time: 6 hours
Result: Showed targeted downregulation of MCL-1 in both ABC and GCB subtypes.

Animal Protocol

ABC subtypes (U2932, RIVA, OCI-LY10), GCB subtypes (SU-DHL-4, NU-DHL-1) xenografted in Female NOD.CB17-Prkdcscid/NCrHsd mice
200 mpk
Oral gavage; U2932, RIVA, SU-DHL-4 (six days per week for 4 weeks), OCI-LY10 (six days per week for 2 weeks), NU-DHL-1 (five days per week for 3 weeks)

References

[1]. Voruciclib, a clinical stage oral CDK9 inhibitor, represses MCL-1 and sensitizes high-risk Diffuse Large B-cell Lymphoma to BCL2 inhibition. Sci Rep. 2017 Dec 21;7(1):18007.

These protocols are for reference only. InvivoChem does not independently validate these methods.

Physicochemical Properties

Molecular Formula	C22H19CLF3NO5
Molecular Weight	469.8412
Exact Mass	469.09
Elemental Analysis	C, 56.24; H, 4.08; Cl, 7.55; F, 12.13; N, 2.98; O, 17.03
CAS #	1000023-04-0
Related CAS #	Voruciclib hydrochloride;1000023-05-1;(2S,3R)-Voruciclib hydrochloride;rel-(2S,3R)-Voruciclib;1253731-24-6
Appearance	Solid powder
SMILES	CN1CC[C@H]([C@@H]1CO)C2=C(C=C(C3=C2OC(=CC3=O)C4=C(C=C(C=C4)C(F)(F)F)Cl)O)O
InChi Key	MRPGRAKIAJJGMM-OCCSQVGLSA-N
InChi Code	InChI=1S/C22H19ClF3NO5/c1-27-5-4-12(14(27)9-28)19-15(29)7-16(30)20-17(31)8-18(32-21(19)20)11-3-2-10(6-13(11)23)22(24,25)26/h2-3,6-8,12,14,28-30H,4-5,9H2,1H3/t12-,14+/m1/s1
Chemical Name	2-[2-chloro-4-(trifluoromethyl)phenyl]-5,7-dihydroxy-8-[(2R,3S)-2-(hydroxymethyl)-1-methylpyrrolidin-3-yl]chromen-4-one
Synonyms	1000023-04-0 (free base); 2505206-37-9 (malonate)
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: ~50 mg/mL (~106.4 mM)
Solubility (In Vivo)	Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2:* DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] 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. Injection Formulation 5:* 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.)

Solubility (In Vitro)

DMSO: ~50 mg/mL (~106.4 mM)

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)

Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).

View More

Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)]
*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.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline)

Oral Formulations

Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).

View More

Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders

Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

(Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.1284 mL	10.6419 mL	21.2838 mL
	5 mM	0.4257 mL	2.1284 mL	4.2568 mL
	10 mM	0.2128 mL	1.0642 mL	2.1284 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.

Calculator

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Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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See Example

An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?

Enter 350.26 in the Molecular Weight (MW) box
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The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

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Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

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:

Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
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The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box

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Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4 c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:

Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
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The answer appears in the Volume (to add to vial) box

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)

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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.

Note： (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.

Clinical Trial Information

NCT Number	Recruitment	interventions	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT03547115	Recruiting	Drug: voruciclib monotherapy Drug: voruciclib and venetoclax	Follicular Lymphoma (FL) Acute Myeloid Leukemia (AML)	MEI Pharma, Inc.	May 31, 2018	Phase 1

Biological Data

Comparative kinase profiles of voruciclib and flavopiridol. Sci Rep . 2017 Dec 21;7(1):18007.

Voruciclib at clinically relevant concentrations leads to down regulation of MCL-1 protein (a) Predicted plasma concentrations in humans dosed daily orally with 250 mg voruciclib. Sci Rep . 2017 Dec 21;7(1):18007.

Voruciclib combined with venetoclax leads to model-dependent tumor growth inhibition and long term systemic benefits. Sci Rep . 2017 Dec 21;7(1):18007.