IRL-1620 TFA is a potent and selective endothelin receptor type B (ETB) agonist with a Ki of 16 pM. IRL-1620 TFA (1-100 nM) increases cytosolic Ca2+ in the vascular endothelium with little effect on resting muscle tone, and relaxes the norepinephrine-stimulated tone.
IRL-1620 TFA (1-100 nM) induces contractions of the guinea pig trachea. Rats treated with IRL-1620 significantly reduces the cognitive impairment induced by Aβ.
| Molecular Weight | 1934.97 |
| Formula | C88H118F3N17O29 |
| CAS Number | 142569-99-1 (free base) |
| Solubility (25°C) | DMSO 50 mg/mL (Need ultrasonic) |
| Storage | Store at ≤ -20°C, protect from light, dry, sealed |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
| Related Endothelin Receptor Products |
|---|
| Endothelin 1 (swine, human) (TFA)
Endothelin 1 (swine, human) (TFA) is a synthetic peptide with the sequence of human and swine Endothelin 1, which is a potent endogenous vasoconstrictor. |
| Atrial Natriuretic Peptide (ANP) (1-28), rat
Atrial Natriuretic Peptide (ANP) (1-28), rat is a major circulating form of ANP in rats, potently inhibits Angiotensin II (Ang II)-stimulated endothelin-1 secretion in a concentration-dependent manner. |
| [Asn18] Endothelin-1, human
[Asn18] Endothelin-1, human is a peptide. |
| [Lys4] Sarafotoxin S6c
[Lys4] Sarafotoxin S6c, a sarafotoxin analogue, is a potent and partial agonist of endothelin receptor. |
| [Ala2] Endothelin-3, human
[Ala2] Endothelin-3, human is a linear analog of endothelin-3 (ET-3) where substitution of Ala for Cys residues. |
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