AMPA receptor modulator-2 (Example 134) is a modulator of AMPA receptors, with pIC50 of 10.1 for TARPγ2-dependent AMPA receptors.

Physicochemical Properties

Molecular Formula	C15H6F6N4OS
Molecular Weight	404.2898
Exact Mass	404.016
CAS #	2034181-36-5
PubChem CID	122654476
Appearance	White to off-white solid powder
LogP	4
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	10
Rotatable Bond Count	1
Heavy Atom Count	27
Complexity	602
Defined Atom Stereocenter Count	0
SMILES	S1C(N([H])C2C([H])=C([H])C(=C([H])C1=2)N1C(C(F)(F)F)=NC2C([H])=C([H])C(C(F)(F)F)=NC1=2)=O
InChi Key	BPZAQDCXSKBMKM-UHFFFAOYSA-N
InChi Code	InChI=1S/C15H6F6N4OS/c16-14(17,18)10-4-3-8-11(24-10)25(12(22-8)15(19,20)21)6-1-2-7-9(5-6)27-13(26)23-7/h1-5H,(H,23,26)
Chemical Name	6-[2,5-bis(trifluoromethyl)imidazo[4,5-b]pyridin-3-yl]-3H-1,3-benzothiazol-2-one
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)

Biological Activity

Targets	pIC50: AMPA receptor (10.1)[1].
References	[1]. AZABENZIMIDAZOLES AND THEIR USE AS AMPA RECEPTOR MODULATORS. Patent. WO2016176460.

Solubility Data

Solubility (In Vitro)

DMSO: 250 mg/mL (618.37 mM) H2O: < 0.1 mg/mL

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.08 mg/mL (5.14 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 2.08 mg/mL (5.14 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. 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. Solubility in Formulation 3: ≥ 2.08 mg/mL (5.14 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.4735 mL	12.3674 mL	24.7347 mL
	5 mM	0.4947 mL	2.4735 mL	4.9469 mL
	10 mM	0.2473 mL	1.2367 mL	2.4735 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.