research use only

SD-208 TGF-beta/Smad inhibitor

Cat.No.S7624

SD-208 is a selective TGF-βRI (ALK5) inhibitor with IC50 of 48 nM, >100-fold selectivity over TGF-βRII.

Chemical Structure

Molecular Weight: 352.75

Jump to Mechanism of Action Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.67%

99.67

Related Targets	PKC Bcr-Abl ROCK
Related Products	SB431542 LDN-193189 Galunisertib (LY2157299) LY2109761 SB525334 LDN-193189 Dihydrochloride SIS3 HCl RepSox (E-616452) LY364947 DMH1 SB505124 GW788388 A-83-01 K02288 Vactosertib (TEW-7197) SIS3 Kartogenin ITD-1 LDN-212854 LY 3200882 ML347 TP0427736 HCl SRI-011381 (C381) LDN-214117 Hesperetin Alantolactone TGFβRI-IN-3 Anti-human/mouse TGF-β-InVivo Elezanumab (Anti-RGMA) BMP4 Antibody [J12D21]

Chemical Information, Storage & Stability

Molecular Weight	352.75	Formula	C₁₇H₁₀ClFN₆	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	627536-09-8	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	C1=CC(=C(C=C1Cl)C2=NC3=NC=CN=C3C(=N2)NC4=CC=NC=C4)F

Solubility

In vitro
Batch:

DMSO : 9 mg/mL (25.51 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

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.
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	1% methylcellulose Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	8.000mg/ml (22.68mM)	Taking the 1 mL working solution as an example, add 8 mg of this product to 1 ml of 1% methylcellulose clear solution, and mix evenly to form a uniform suspension. 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.

Mechanism of Action

Targets/IC₅₀/Ki	TGF-βRI (ALK5) ^[1] (Cell-free assay) 48 nM
In vitro	SD-208 inhibits the cell growth and constitutive and TGF-beta-evoked migration and invasion, and enhances immunogenicity in murine SMA-560 and human LN-308 glioma cells. ^[1] This compound blocks TGF-beta-induced phosphorylation of the receptor-associated Smads, Smad2 and Smad3, and stimulates epithelial-to-mesenchymal transdifferentiation, migration, and invasiveness into Matrigel in vitro. ^[2] It also abolishes the promoting effect of TGF-β on neointimal smooth muscle-like cell (SMLC) proliferation and migration in vitro. ^[3]
Kinase Assay	Kinase assay
Kinase Assay	Various kinase activities are assayed by measuring the incorporation of radiolabeled ATP into a peptide or protein substrate. The reactions are performed in 96-well plates and included the relevant kinase, substrate, ATP, and appropriate cofactors. The reactions are incubated and then stopped by the addition of phosphoric acid. Substrate is captured onto a phosphocellulose filter, which is washed free of unreacted ATP. The counts incorporated are determined by counting on a microplate scintillation counter. The ability of this compound to inhibit the respective kinase is determined by comparing counts incorporated in the presence of compound with those incorporated in the absence of compound.
In vivo	SD-208 (1 mg/mL, p.o.) significantly prolongs the median survival of SMA-560 glioma-bearing mice. ^[1] In syngeneic 129S1 mice, this compound (60 mg/kg/d, p.o.) inhibits primary R3T tumor growth, and reduces the number and the size of lung metastases. ^[2] In the murine aortic allograft model, this chemical effectively reduces the formation of intimal hyperplasia of transplant arteriosclerosis (TA). ^[3]
References	[1] https://pubmed.ncbi.nlm.nih.gov/15520202/ [2] https://pubmed.ncbi.nlm.nih.gov/16857807/ [3] https://pubmed.ncbi.nlm.nih.gov/24685405/

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

Frequently Asked Questions

Question 1:
How to reconstitute it for in vivo studies?

Answer:
We recommend to dissolve it in 1% methylcellulose or 1% CMC-Na, which is a suspension for oral gavage administration.

C1=C0/X	C1:	LOG(C1):
C2=C1/X	C2:	LOG(C2):
C3=C2/X	C3:	LOG(C3):
C4=C3/X	C4:	LOG(C4):
C5=C4/X	C5:	LOG(C5):
C6=C5/X	C6:	LOG(C6):
C7=C6/X	C7:	LOG(C7):
C8=C7/X	C8:	LOG(C8):