PSB 0777 ammonium hydrate
PRODUCTS SPECIFICATIONS
DESCRIPTION
Overview
| MDL | - |
|---|---|
| Molecular Weight | 532.09 |
| Molecular Formula | C18H20N5O7S2.NH4.1.75H2O |
| SMILES | OC[C@@H]1[C@H]([C@H]([C@H](N2C=NC3=C(N=C(SCCC4=CC=C(S(=O)([O-])=O)C=C4)N=C32)N)O1)O)O.[NH4+].[1.75].O |
Summary
PSB 0777 ammonium hydrate is a potent and selective adenosine A 2A receptor full agonist with K i values of 44.4 nM, 360 nM for rat and human A 2A receptors, respectively. PSB 0777 ammonium hydrate has K i values of ≥10000 nM, 541 nM for rat and human A 1 receptors, respectively. PSB 0777 ammonium hydrate shows poor brain penetrant and perorally non-absorbable effect. PSB 0777 ammonium hydrate has the potential for inflammatory bowel disease (IBS) research research [1] [2] [3] .
IC50 & Target
Ki: 44.4 nM (rat A 2A ), 360 nM (human A 2A ), ≥10000 nM (rat A 1 ) and 541 nM (human A 1 ) [1]
In Vitro
PSB 0777 ammonium hydrate (compound 7) shows high selectivity for the A
2A
AR (>225-fold) versus the other AR subtypes (K
i
values of >10000 nM and ≫10000 for human A
2B
receptor and A
3
receptor, respectively). PSB 0777 ammonium hydrate acts as an full agonist at A
2A
AR with an EC
50
value of 117 nM in CHO-K1 cells
[1]
.
PSB-0777 ammonium binds human β1 (K
i
=4.4 μM) and β3 (K
i
=3.3 μM) adrenergic receptors
[2]
.
PSB 0777 ammonium hydrate (0.1 µM, 1 µM, 10 µM) increases concentration-dependently Acetylcholine (Ach, 1 mM) contractions in untreated and inflamed rat ileum/jejunum preparations in ex vivo experiments
[1]
.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
In Vivo
PSB 0777 ammonium hydrate (0.4 mg/kg/day; oral gavage; from the day 5 to 10) causes a marked reduction of inflammatory cell infiltration and an amelioration of colonic mucosal architecture
[3]
.
PSB 0777 ammonium hydrate (0.03, 0.3, 3 mg/kg; i.p.) causes dose-dependent hypothermia and hypoactivity in C57BL/6J mice
[2]
.
PSB 0777 ammonium hydrate cannot be absorbed systemically by the digestive mucosa once administered by the oral route. PSB 0777 ammonium hydrate (0.4 mg/kg/day; PO) has very low plasma concentrations in rats at 30 min (below 5 nM), and there is no plasma concentrations at 60 min after administration. PSB 0777 ammonium hydrate (0.4 mg/kg/day; IP) makes plasma concentrations well evident at 30 min, and decreases after 60 min, and is not detectable at 120 and 240 min
[3]
.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Appearance
Solid
Shipping
Room temperature in continental US; may vary elsewhere.
Storage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
References
- [1] Ali El-Tayeb, et al. Development of Polar Adenosine A2A Receptor Agonists for Inflammatory Bowel Disease: Synergism with A2B Antagonists. ACS Med Chem Lett. 2011 Oct 10;2(12):890-5.
- [2] Jesse Lea Carlin, et al.Activation of adenosine A 2A or A 2B receptors causes hypothermia in mice. Neuropharmacology. 2018 Sep 1;139:268-278.
- [3] L Antonioli, et al. Anti-inflammatory effect of a novel locally acting A 2A receptor agonist in a rat model of oxazolone-induced colitis. Purinergic Signal. 2018 Mar;14(1):27-36.
