Catalog No.S7098

PD 123319 is a potent, selective AT2 angiotensin II receptor antagonist with IC50 of 34 nM.

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PD123319 Chemical Structure

PD123319 Chemical Structure
Molecular Weight: 508.61

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Product Description

Biological Activity

Description PD 123319 is a potent, selective AT2 angiotensin II receptor antagonist with IC50 of 34 nM.
Targets AT2 receptor [1]
IC50 34 nM
In vitro PD 123319 is shown to discriminate between two subclasses of AII receptors in many different tissues. 125I-AII specifically labeled two classes of binding sites for AII in a membrane preparation of bovine adrenal glomerulosa cells. The first class (DuP-753 sensitive) represents approximately 85% of the total binding sites for AII and possesses a high affinity (IC50 of 92.9 nM) for DuP-753. PD-123319 does not have any effect on 125I-AII binding to this site. The second class of binding sites is more sensitive to PD-123319, with an IC50 of 6.9 nM, and has a much lower affinity for DuP-753 (IC50 around 10 microM). [2]
In vivo PD 123319 has no effect on cerebral blood flow autoregulation. Acute AT2-receptor blockade does not influence CBF autoregulation. [3]Intravenous administration of PD 123319 to conscious hypertensive rats elicites an immediate dose-dependent increase in MAP that is sustained for approximately 7.4 min with 3 mg/kg PD 123319. [4]

Protocol(Only for Reference)

Animal Study: [3]

Animal Models spontaneously hypertensive rats
Formulation saline
Dosages 0.36 and 1 mg/kg/min
Administration intravenous

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 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 resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Blankley CJ, et al. J Med Chem, 1991, 34(11), 3248-3260.

[2] Boulay G, et al. Mol Pharmacol, 1992, 41(4), 809-815.

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Chemical Information

Download PD123319 SDF
Molecular Weight (MW) 508.61


CAS No. 130663-39-7
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 100 mg/mL (196.61 mM)
Water 100 mg/mL (196.61 mM)
Ethanol 100 mg/mL (196.61 mM)
In vivo Saline 30 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name 1H-Imidazo[4,5-c]pyridine-6-carboxylic acid, 1-[[4-(dimethylamino)-3-methylphenyl]methyl]-5-(2,2-diphenylacetyl)-4,5,6,7-tetrahydro-, (6S)-

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