HECT E3-IN-1 (compound 3) is an inhibitor (blocker/antagonist) of HECT E3 ligase. HECT E3-IN-1 (compound 3) disrupts Ub binding to the Nedd4-1 non-covalent Ub binding site.

Physicochemical Properties

Molecular Formula	C21H26N2O4
Molecular Weight	370.442145824432
Exact Mass	370.189
CAS #	1810058-52-6
PubChem CID	91844662
Appearance	White to off-white solid powder
LogP	3
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	7
Heavy Atom Count	27
Complexity	558
Defined Atom Stereocenter Count	0
SMILES	C(OC)(=O)/C=C/CNC(C1C2=C(N(C3CCCC3)C=1C)C=CC(OC)=C2)=O
InChi Key	ONZCVJIBENGLKN-RMKNXTFCSA-N
InChi Code	InChI=1S/C21H26N2O4/c1-14-20(21(25)22-12-6-9-19(24)27-3)17-13-16(26-2)10-11-18(17)23(14)15-7-4-5-8-15/h6,9-11,13,15H,4-5,7-8,12H2,1-3H3,(H,22,25)/b9-6+
Chemical Name	methyl (E)-4-[(1-cyclopentyl-5-methoxy-2-methylindole-3-carbonyl)amino]but-2-enoate
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

References

[1]. A Small Molecule That Switches a Ubiquitin Ligase From a Processive to a Distributive Enzymatic Mechanism. J Am Chem Soc. 2015 Oct 7;137(39):12442-5.

Solubility Data

Solubility (In Vitro)

DMSO: 100 mg/mL (269.95 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (6.75 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 (6.75 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 (6.75 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	2.6995 mL	13.4975 mL	26.9949 mL
	5 mM	0.5399 mL	2.6995 mL	5.3990 mL
	10 mM	0.2699 mL	1.3497 mL	2.6995 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.