0990CL is a specific inhibitor of the heterotrimeric Gαi subunit that can directly interact with Gαi. 0990CL blocks α2AR-mediated cAMP regulation.

Physicochemical Properties

Molecular Formula	C21H21N5
Molecular Weight	343.424943685532
Exact Mass	343.179
CAS #	511514-03-7
PubChem CID	950615
Appearance	Light yellow to yellow solid powder
LogP	3.7
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	3
Heavy Atom Count	26
Complexity	561
Defined Atom Stereocenter Count	0
SMILES	N1=C(NC2N=C3C=CC=CC3=C(C3C=CC=CC=3)N=2)NC(C)=CC1(C)C
InChi Key	DXICUHJLOMNKOU-UHFFFAOYSA-N
InChi Code	InChI=1S/C21H21N5/c1-14-13-21(2,3)26-20(22-14)25-19-23-17-12-8-7-11-16(17)18(24-19)15-9-5-4-6-10-15/h4-13H,1-3H3,(H2,22,23,24,25,26)
Chemical Name	(4-Phenyl-quinazolin-2-yl)-(4,6,6-trimethyl-1,6-dihydro-pyrimidin-2-yl)-amine
Synonyms	0990-CL 0990 CL 0990CL
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

ln Vitro

In HEK293 GloSensor cells, 0990CL (100 nM-1 μM; 24 hours) increases α2AR/Gαi-mediated cAMP levels that are induced by Fsk and UK14304. A restoration of 31% of the cAMP decrease is possible at a dose of 100 nM[1]. 0990CL (30 μM; 30 minutes pretreatment) demonstrated higher Gαi1 selectivity than Gαq. It has a maximal endpoint fluorescence decrease of 38±8% and 10%, respectively, and shows selectivity for Gαi and Gαq [1].

References

[1]. Development of inhibitors of heterotrimeric Gαi subunits.Bioorg Med Chem. 2014 Jul 1;22(13):3423-34.

Solubility Data

Solubility (In Vitro)

DMSO : ~250 mg/mL (~727.97 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (7.28 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 25.0 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: ≥ 2.5 mg/mL (7.28 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in 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 25.0 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: ≥ 2.5 mg/mL (7.28 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 25.0 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	2.9118 mL	14.5590 mL	29.1180 mL
	5 mM	0.5824 mL	2.9118 mL	5.8236 mL
	10 mM	0.2912 mL	1.4559 mL	2.9118 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.