PLX5622 hemifumarate

Name: PLX5622 hemifumarate
Brand: MedChemExpress
SKU: HY-114153A
Rating: 5.0 (38 reviews)

Cat. No.: HY-114153A Purity: 99.64%: FAQs
Data Sheet SDS COA Handling Instructions

Molarity Calculator

PLX5622 hemifumarate is a highly selective brain penetrant and orally active CSF1R inhibitor (IC₅₀=0.016 µM; K_i=5.9 nM). PLX5622 hemifumarate allows for extended and specific microglial elimination, preceding and during pathology development. PLX5622 hemifumarate demonstrates desirable PK properties in varies animals.

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

PLX5622 hemifumarate Chemical Structure

Size	Price	Stock	Quantity

Free Sample (0.1 - 0.5 mg)		Apply Now
Solid + Solvent
10 mM * 1 mL in DMSO ready for reconstitution	USD 132	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in DMSO	USD 132	In-stock	Estimated Time of Arrival: December 31
Solid
5 mg	USD 120	In-stock	Estimated Time of Arrival: December 31
10 mg	USD 195	In-stock	Estimated Time of Arrival: December 31
25 mg	USD 390	In-stock	Estimated Time of Arrival: December 31
50 mg	USD 650	In-stock	Estimated Time of Arrival: December 31
100 mg	USD 980	In-stock	Estimated Time of Arrival: December 31
200 mg		Get quote
500 mg		Get quote

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Customer Review

Based on 38 publication(s) in Google Scholar

Other Forms of PLX5622 hemifumarate:

PLX5622 In-stock

38 Publications Citing Use of MCE PLX5622 hemifumarate

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Biological Activity
Purity & Documentation
References
Customer Review

Description

IC₅₀ & Target

CSF1R^[1]

In Vitro

PLX5622 (1-20 μM; 3 days) hemifumarate effectively depletes microglia without affecting oligodendrocytes or astrocytes in cerebellar slices. PLX5622 (4 μM; 3 days) hemifumarate causes a 30-40% reduction in NG2+ or PDGFRα+ cells, and this increased to 90-95% at 20 μM. No reduction of NG2+ or PDGFRα+ OPCs is observed in slices exposed to 1 μM or 2 μM PLX5622 despite robust (~95%) depletion of the microglial cells^[3].

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

In Vivo

Pharmacodynamics of PLX5622 hemifumarate in preclinical studies
PLX5622 (1200 ppm; chow; for 3 weeks or 3 days; adult C57/Bl6 wild type mice) hemifumarate leads to around 80% of microglia lost after 3 days of treatment and a 99% microglia loss after 3 weeks of treatment. PLX5622 (adult C57/Bl6 wild type mice aged 3 months; diet for 3 weeks) decreases microglia in cortex, striatum, cerebellum and hippocampus^[4].
PLX5622 (50 mg/kg; intraperitoneal injection; once (neonatal rat) or twice (adult rat) a day; for a total of 14 days) hemifumarate depletes microglia by 80-90% within 3 days of treatment, which increases to > 90% by 7 days. After 14 days of PLX5622 treatment, microglia is depleted by > 96% in both neonates and adults while preserving baseline astrocyte quantity. (A single daily injection of 0.65% PLX5622 suspended in 5% dimethyl sulfoxide and 20% Kolliphor RH40 in 0.01 M PBS is sufficient for neonatal microglia depletion, adult depletion requires injections twice daily)^[5].
PLX5622 (formulated in AIN-76A standard chow at 1200 mg/kg; for 28 days) hemifumarate leads to reduction in microglia throughout the CNS in 14-month-old 5xfAD mice^[6].

Pharmacokinetics of PLX5622 hemifumarate in preclinical species^[4]

Species	IV					PO (gavage)
Species	Dose (mg/kg)	AUC_0-∞ (ng•hr/mL)	CL (mL/min/kg)	Vss (L/kg)	t_1/2 (hr)	Dose (mg/kg)	AUC_0-∞ (ng•hr/mL)	Cmax (ng/mL)	F
Mouse	1.92	15,500	2.1	0.34	2.6	45	215,000	26,300	59%
Rat (male)	1.13	2,630	7.7	1.2	2.3	45	99,600	12,000	95%
Rat (female)	1.13	5,110	3.7	1.0	3.9	45	181,000	15,600	89%
Dog	1.00	6,230	3.0	2.3	15	45	96,500	3,630	34%
Monkey	1.35	2,100	11	1.6	2.2	ND	ND	ND	ND

Preparation of gavage dosing suspensions for PLX5622 hemifumarate^[4]
PLX5622 hemifumarate is dissolved in DMSO at a concentration that is 20x the final dosing solution. The compound stock is protected from light. A fresh stock is made each week.
The components of the diluent generally are prepared a day or more in advance because they take time to dissolve completely: a) 2% hydroxypropyl methyl cellulose (HPMC): 2.0 g powder was brought to 100 mL deionized water; b) 25% Polysorbate 80 (PS80): 25 g was brought to 100 mL deionized water. To make 100 mL diluent, add 25 mL of 2% HPMC stock (0.5% final) and 4 mL of 25% PS80 stock (1% final) to 71 mL deionized water to have final 100 mL. Final composition after mixing with compound: 0.5% HPMC, 1% PS80, 5% DMSO.
On each dosing day, the compound stock is diluted 20-fold as follows: 19 volumes of diluent are measured into the tube, and 1 volume of the 20x compound/DMSO stock is added. The cap is closed and the content of the tube is mixed by inversion and placed in a sonicating water bath to make a uniform suspension.

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

Clinical Trial

Molecular Weight

453.45

Formula

C₂₃H₂₁F₂N₅O₃

Appearance

Solid

Color

Off-white to light yellow

SMILES

COC1=NC=C(F)C=C1CNC2=NC(F)=C(CC3=CNC4=NC=C(C)C=C43)C=C2.O=C(O)/C=C/C(O)=O.[1/2]

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility

In Vitro:

DMSO : 100 mg/mL (220.53 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	2.2053 mL	11.0266 mL	22.0531 mL
5 mM	0.4411 mL	2.2053 mL	4.4106 mL
10 mM	0.2205 mL	1.1027 mL	2.2053 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 (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Molarity Calculator
Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

In Vivo:

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.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 3.25 mg/mL (7.17 mM); Clear solution

This protocol yields a clear solution of ≥ 3.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (32.5 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 3.25 mg/mL (7.17 mM); Clear solution

This protocol yields a clear solution of ≥ 3.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (32.5 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil
Solubility: ≥ 3.25 mg/mL (7.17 mM); Clear solution

This protocol yields a clear solution of ≥ 3.25 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (32.5 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

DMSO +

Tween-80 +

Saline

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.

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).

Calculation results:

Working solution concentration: mg/mL

Method for preparing stock solution: mg drug dissolved in μL DMSO (Stock solution concentration: mg/mL).

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).

Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.

If the continuous dosing period exceeds half a month, please choose this protocol carefully.

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

Purity: 99.64%

Select Batch:

Data Sheet (287 KB) SDS (251 KB)

COA (256 KB) HNMR (487 KB) LCMS (98 KB)

Handling Instructions (2659 KB)

References

[1]. Spangenberg E, et al. Sustained microglial depletion with CSF1R inhibitor impairs parenchymal plaque development in an Alzheimer's disease model. Nat Commun. 2019 Aug 21;10(1):3758. [Content Brief]

[2]. Lee S, et al. Targeting macrophage and microglia activation with colony stimulating factor 1 receptor inhibitor is an effective strategy to treat injury-triggered neuropathic pain. Mol Pain. 2018 Jan-Dec;14:1744806918764979. [Content Brief]

[3]. Liu Y, et al. Concentration-dependent effects of CSF1R inhibitors on oligodendrocyte progenitor cells ex vivo and in vivo. Exp Neurol. 2019;318:32-41. [Content Brief]

[4]. Badimon A, et al. Negative feedback control of neuronal activity by microglia. Nature. 2020;586(7829):417-423. [Content Brief]

[5]. Andrew J. Riquier, et al. Astrocytic response to neural injury is larger during development than in adulthood and is not predicated upon the presence of microglia, Brain, Behavior, & Immunity-Health, Volume 1, 2020, 100010, ISSN 2666-3546.

[6]. Spangenberg EE, et al. Eliminating microglia in Alzheimer's mice prevents neuronal loss without modulating amyloid-β pathology. Brain. 2016;139(Pt 4):1265-1281. [Content Brief]

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

DMSO	1 mM	2.2053 mL	11.0266 mL	22.0531 mL	55.1329 mL
	5 mM	0.4411 mL	2.2053 mL	4.4106 mL	11.0266 mL
	10 mM	0.2205 mL	1.1027 mL	2.2053 mL	5.5133 mL
	15 mM	0.1470 mL	0.7351 mL	1.4702 mL	3.6755 mL
	20 mM	0.1103 mL	0.5513 mL	1.1027 mL	2.7566 mL
	25 mM	0.0882 mL	0.4411 mL	0.8821 mL	2.2053 mL
	30 mM	0.0735 mL	0.3676 mL	0.7351 mL	1.8378 mL
	40 mM	0.0551 mL	0.2757 mL	0.5513 mL	1.3783 mL
	50 mM	0.0441 mL	0.2205 mL	0.4411 mL	1.1027 mL
	60 mM	0.0368 mL	0.1838 mL	0.3676 mL	0.9189 mL
	80 mM	0.0276 mL	0.1378 mL	0.2757 mL	0.6892 mL
	100 mM	0.0221 mL	0.1103 mL	0.2205 mL	0.5513 mL