Cat. No.: HY-135674

SR-318

1 Cited Publications

Customer Review

Based on 1 publication(s) in Google Scholar

SR-318, a chemical probe, is a potent and highly selective p38 MAPK inhibitor with IC₅₀s of 5 nM, 32 nM and 6.11 μM for p38α, p38β and p38α/β, respectively. SR-318 potently inhibits the TNF-α release in whole blood with an IC₅₀ of 283 nM. SR-318 has anti-cancer and anti-inflammatory activity.

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

Purity: 98.17%
CAS No.: 2413286-32-3
Formula: C₂₇H₃₃N₅O₂
Molecular Weight:459.58

Storage:

4°C, protect from light

* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

SR-318 Chemical Structure

CAS No.: 2413286-32-3

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Top Publications Citing

Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biological Activity
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
Chemical Information
Publications (1)
Solvent & Solubility
- In Vitro
- In Vivo
Purity & Documentation
References
Help & FAQs
Classifications
Bioz

Biological Activity

Description

IC₅₀ & Target^[1]

p38α

5 nM (IC₅₀)

p38β

32 nM (IC₅₀)

All p38 MAPK Isoforms :

All TNF Receptor Isoforms :

Cellular Effect

Cell Line	Type	Value	Description	References
HEK293	IC₅₀	0.01 μM Compound: 93; SR-318	Inhibition of p38-beta (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of p38-beta (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	0.91 μM Compound: 93; SR-318	Inhibition of ZAK (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of ZAK (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	10 μM Compound: 93; SR-318	Inhibition of MYLK4 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of MYLK4 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	14 μM Compound: 93; SR-318	Inhibition of RSK4 kinase domain 1 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of RSK4 kinase domain 1 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	3 μM Compound: 93; SR-318	Inhibition of DDR1 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of DDR1 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	5.6 μM Compound: 93; SR-318	Inhibition of DDR2 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of DDR2 (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]
HEK293	IC₅₀	8.5 μM Compound: 93; SR-318	Inhibition of KIT (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay Inhibition of KIT (unknown origin) expressed in human HEK293 cells incubated for 2 hrs followed by NanoBRET NanoGlo Substrate addition by NanoBRET assay	[PMID: 31702918]

In Vitro

SR-318 presents a potent and selective type-II inhibitor of p38α/β that can be used as a chemical probe for targeting this particular inactive state of these two p38 isoforms^[1].

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

Chemical Information

CAS No. 2413286-32-3
Appearance Solid
Molecular Weight 459.58
Formula C₂₇H₃₃N₅O₂
Color White to off-white
SMILES

O=C(C1=C(N)N(C2=CC=CC=C2)N=C1)NCC3=CC=C(C(NCCCC4CCCCC4)=O)C=C3
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, protect from light

* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Publications (1)

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Journal Impact Factor

Nat Commun

Human iPSC-based Modeling of Pulmonary Fibrosis Reveals p300/CBP Inhibition Suppresses Alveolar Transitional Cell State. [Abstract]

2026 Feb 12;17(1):1214. PMID: 41680175

Solvent & Solubility

In Vitro:

DMSO : 125 mg/mL (271.99 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.1759 mL

10.8795 mL

21.7590 mL

5 mM

0.4352 mL

2.1759 mL

4.3518 mL

10 mM

0.2176 mL

1.0879 mL

2.1759 mL

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 (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Molarity Calculator

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

Mass Mass

Concentration Concentration

Volume Volume

Molecular Weight Molecular Weight

Dilution Calculator

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

Concentration _(start) Concentration _(start)

Volume _(start) Volume _(start)

Concentration _(final) Concentration _(final)

Volume _(final) Volume _(final)

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

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: ≥ 2.08 mg/mL (4.53 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.

Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)

Solubility: ≥ 2.08 mg/mL (4.53 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.08 mg/mL (4.53 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 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 (20.8 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

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

Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (270 KB)
SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Röhm S, et al. Fast Iterative Synthetic Approach toward Identification of Novel Highly Selective p38 MAP Kinase Inhibitors. J Med Chem. 2019 Dec 12;62(23):10757-10782. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	2.1759 mL	10.8795 mL	21.7590 mL	54.3975 mL
	5 mM	0.4352 mL	2.1759 mL	4.3518 mL	10.8795 mL
	10 mM	0.2176 mL	1.0879 mL	2.1759 mL	5.4397 mL
	15 mM	0.1451 mL	0.7253 mL	1.4506 mL	3.6265 mL
	20 mM	0.1088 mL	0.5440 mL	1.0879 mL	2.7199 mL
	25 mM	0.0870 mL	0.4352 mL	0.8704 mL	2.1759 mL
	30 mM	0.0725 mL	0.3626 mL	0.7253 mL	1.8132 mL
	40 mM	0.0544 mL	0.2720 mL	0.5440 mL	1.3599 mL
	50 mM	0.0435 mL	0.2176 mL	0.4352 mL	1.0879 mL
	60 mM	0.0363 mL	0.1813 mL	0.3626 mL	0.9066 mL
	80 mM	0.0272 mL	0.1360 mL	0.2720 mL	0.6800 mL
	100 mM	0.0218 mL	0.1088 mL	0.2176 mL	0.5440 mL

Keywords

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SR-318

Apoptosis Compound Library

Immunology/Inflammation Compound Library

Kinase Inhibitor Library

MAPK Compound Library

Anti-Cancer Compound Library

Differentiation Inducing Compound Library

Reprogramming Compound Library

Oxygen Sensing Compound Library

Pyroptosis Compound Library

Chemical Probe Library

Anti-Lung Cancer Compound Library

Anti-Cancer Metabolism Compound Library

Neurodegenerative Disease-related Compound Library

Anti-Obesity Compound Library

Angiogenesis-Related Compound Library

Antidepressant Compound Library

Anti-Prostate Cancer Compound Library

Anti-Pulmonary Fibrosis Compound Library

Cancer Stem Cells Compound Library

Heterocyclic Compound Library

Pain-Related Compound Library

Mitochondrial Protection Compound Library

Membrane Protein-targeted Compound Library

Membrane Receptor-targeted Compound Library

Autoimmune Disease Compound Library

Highly Selective Inhibitors Library

Cytokine Inhibitors Library

Serine/Threonine Kinase Inhibitor Library

Anti-Ovarian Cancer Compound Library

Multi-Target Compound Library

Radioprotector Library

Bioactive Compound Library Max

MCE Bioactive Compound Library

Bioactive Compound Library

Anti-Gastric Cancer Compound Library

Protein Kinase Compound Library

Cell Proliferation Compound Library

High-Throughput Bioactive Compound Library

Anti-Rheumatic Arthritis Compound Library

Posttranslational Modification Library

Lactylation Compound Library

Publications Citing Use of MedChemExpress (MCE) SR-318

All p38 MAPK Isoforms

All TNF Receptor Isoforms

Biological Activity

Chemical Information

Publications (1)

Solvent & Solubility

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

SR-318 Related Classifications

HY-135674 Related Classifications