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Baricitinib phosphate JAK inhibitor

Name: Baricitinib phosphate
Brand: Selleck Chemicals
SKU: S5754
Availability: InStock
Rating: 5 (17 reviews)

Cat.No.S5754

Baricitinib phosphate (INCB-028050, LY-3009104) is a selective JAK1 and JAK2 inhibitor with IC50 of 5.9 nM and 5.7 nM, ~70 and ~10-fold selective versus JAK3 and Tyk2, no inhibition to c-Met and Chk2. Baricitinib is found to reduce or interrupt the passage of the virus into target cells and is used in the treatment research for COVID-19.

Chemical Structure

Molecular Weight: 469.41

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Quality Control

Batch: Purity: 99.99%

99.99

Related Targets	EGFR STAT Pim
Other JAK Inhibitors	BMS-986165 (Deucravacitinib) AZD1480 WP1066 Filgotinib (GLPG0634) Momelotinib (CYT387) AT9283 Gandotinib (LY2784544) Pacritinib (SB1518) NVP-BSK805 2HCl TG101209

Solubility

In vitro
Batch:

DMSO : 94 mg/mL (200.25 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.600mg/ml (1.28mM)	Taking the 1 mL working solution as an example, add 50 μL of 12 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	4.700mg/ml (10.01mM)	Taking the 1 mL working solution as an example, add 50 μL of 94 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

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

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	469.41	Formula	C₁₆H₂₀N₇O₆PS	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	1187595-84-1	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	INCB-028050 phosphate, LY-3009104 phosphate			SMILES	CCS(=O)(=O)N1CC(C1)(CC#N)N2C=C(C=N2)C3=C4C=CNC4=NC=N3.OP(=O)(O)O

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	JAK2 (Cell-free assay) 5.7 nM JAK1 (Cell-free assay) 5.9 nM TYK2 (Cell-free assay) 53 nM JAK3 (Cell-free assay) >400 nM
References	[1] https://pubmed.ncbi.nlm.nih.gov/20363976/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-09-04)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07222137	RECRUITING	Diabetes Mellitus, Type 1	Eli Lilly and Company	2026-01-12	PHASE3
NCT03773965	RECRUITING	Juvenile Idiopathic Arthritis	Eli Lilly and Company	2019-04-05	PHASE3
NCT06923072	RECRUITING	Kohlmeier-Degos Disease; Malignant Atrophic Papulosis; Degos Disease; Papulosis, Malignant Atrophic	National Heart, Lung, and Blood Institute (NHLBI)	2026-02-18	PHASE2
NCT07543458	NOT_YET_RECRUITING	Dengue; Severe Dengue; Mosquito-Borne Diseases; Vector Borne Diseases; Arbovirus Infections; Flavivirus Infections; RNA Virus Infections; Hemorrhagic Fever	Oxford University Clinical Research Unit, Vietnam	2026-10-01	PHASE3
NCT07262983	RECRUITING	Hyper IgE Syndrome From STAT3 Mutation; Job s Syndrome; HIES; Lupus; Atopic Dermatitis	National Institute of Allergy and Infectious Diseases (NIAID)	2026-09-09	PHASE1
NCT07003997	RECRUITING	Major Depressive Disorder	Emory University	2025-09-03	PHASE2

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