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IRL-1620 acetate is an effective and selective agonist of Endothelin B receptor (ETB) with a Ki of 16 pM which is more selective than ETA with a Ki of 19 μM.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $113 | - | In Stock | |
| 5 mg | $281 | - | In Stock | |
| 10 mg | $412 | - | In Stock | |
| 25 mg | $648 | - | In Stock | |
| 50 mg | $870 | - | In Stock | |
| 100 mg | $1,170 | - | In Stock |
| Description | IRL-1620 acetate is an effective and selective agonist of Endothelin B receptor (ETB) with a Ki of 16 pM which is more selective than ETA with a Ki of 19 μM. |
| Targets&IC50 | ETB receptor:16 pM(Ki), ETA receptor:19 μM(Ki) |
| In vitro | IRL-1620 acetate is 60 times more selective for the ETB receptor than ET-3 (KiETA/ KiETB=1900)[3]. |
| In vivo | IRL-1620 acetate improves both acquisition (learning) and retention (memory) on the water maze task and enhances angiogenic and neurogenic remodeling. Rats treated with IRL-1620 acetate significantly reduces the cognitive impairment induced by Aβ. IRL-1620 acetate treatment enhances the number of blood vessels labeled with VEGF compared to vehicle treatment[1]. IRL-1620 acetate, restores analgesic tolerance to morphine and oxycodone, but it does not affect morphine and oxycodone induced decrease in NGF/PI3K expression. IRL-1620 acetate attenuates opioid tolerance without the involvement of NGF/PI3K pathway[2]. IRL-1620 acetate (1-100 nM) induces contractions of the guinea pig trachea. The effective concentration that produces 30 % of 60 mM KCI-induced contraction is estimated to be 28 nM for IRL 1620[3]. IRL-1620 acetate (1-100 nM) increases cytosolic Ca2+ in the vascular endothelium ([Ca]E) with little effect on resting muscle tone, and relaxes the norepinephrine-stimulated tone with an increase in [Ca]E, in rat aorta[3]. |
| Synonyms | IRL-1620 acetate(142569-99-1 free base) |
| Molecular Weight | 1881 |
| Formula | C88H121N17O29 |
| Smiles | CC(O)=O.O=C(O)[C@H](CC1=CNC2=C1C=CC=C2)NC([C@H]([C@@H](C)CC)NC([C@H]([C@@H](C)CC)NC([C@H](CC(O)=O)NC([C@H](CC(C)C)NC([C@H](CC3=CNC=N3)NC([C@H](C)NC([C@H](CC4=CC=CC=C4)NC([C@H](CC5=CC=C(O)C=C5)NC([C@H](C(C)C)NC([C@H](C)NC([C@H](CCC(O)=O)NC([C@H](CCC(O)=O)NC([C@H](CC(O)=O)NC(CCC(O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O |
| Relative Density. | no data available |
| Sequence | Suc-Asp-Glu-Glu-Ala-Val-Tyr-Phe-Ala-His-Leu-Asp-Ile-Ile-Trp |
| Sequence Short | DEEAVYFAHLDIIW |
| Storage | keep away from moisture | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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