1. GPCR/G Protein
  2. Cholecystokinin Receptor

SR 146131 

Cat. No.: HY-11077
Handling Instructions

SR 146131 is a potent, orally available, and selective nonpeptide (cholecystokinin 1) receptor agonist.

For research use only. We do not sell to patients.

SR 146131 Chemical Structure

SR 146131 Chemical Structure

CAS No. : 221671-61-0

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  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


SR 146131 is a potent, orally available, and selective nonpeptide (cholecystokinin 1) receptor agonist.

IC50 & Target

Cholecystokinin 1 receptor[1]

In Vitro

SR 146131 inhibits in the binding of [125I]-BH-CCK-8S to CCK1sites on 3T3-hCCK1 cell membranes with an IC50 value of 0.56 ± 0.10 nM. At much higher concentrations, SR 146131 also inhibits the binding of radiolabeled CCK to CCK2sites in CHO-hCCK2 membranes with an IC50 of 162 ± 27 nM. SR 146131 is a potent CCK1 agonist on several intracellular events linked to CCK1 receptor activation in various cell types: on [Ca2+]i release and IP1 formation, SR 146131 appears as a full CCK1 receptor agonist in the 3T3-hCCK1 cells, but a partial CCK1receptor agonist on MAPK activation and early gene expression in this cell line. SR 146131 also acts as a partial agonist in the two neuroblastoma cell lines[1].

In Vivo

SR 146131 completely inhibits gastric and gallbladder emptying in mice (ED50 of 66 and 2.7 μg/kg p.o., respectively). SR 146131 dose dependently reduces food intake in fasted rats (from 0.1 mg/kg p.o.), in nonfasted rats in which food intake has been highly stimulated by the administration of neuropeptide Y (1–36) (from 0.3 mg/kg p.o.), in fasted gerbils (from 0.1 mg/kg p.o.), and in marmosets maintained on a restricted diet (from 3 mg/kg p.o.). SR 146131 (10 mg/kg p.o.) also increases the number of Fos-positive cells in the hypothalamic paraventricular nucleus of rats. Locomotor activity of mice is reduced by orally administered SR 146131 (from 0.3 mg/kg p.o.)[1].

Cell Assay

3T3-hCCK1 cells grown to subconfluence in 6-well cluster plates are washed with fresh medium. Twenty-four hours later, the cells are stimulated for 15 min with various concentrations of CCK-8S or SR 146131[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration


Male Sprague-Dawley rats are fasted for 18 h, and allowed access to food for only 6 h between 10 AM and 4 PM each day. Water is available ad libitum. At the end of this adaptation phase, rats are administered SR 146131 (0.03-3 mg/kg p.o.). One hour after SR 146131 administration, a weighed amount of food is introduced into the cage, and food intake is measured 1, 3, 6, and 23 h after SR 146131 administration[1].


SR 146131 (0.01-1 pg) is solubilized in DMSO (1 mg/mL), diluted to the required concentrations with water, and injected (in 1 μL) into one striatum in awake, hand-restrained female CD1 mice (25-30 g). After injection, the animals are placed individually in Plexiglas cages (10 × 10 × 15 cm). Turning behavior in mice is monitored[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight









Please store the product under the recommended conditions in the Certificate of Analysis.


Room temperature in continental US; may vary elsewhere

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SR 146131
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SR 146131

Cat. No.: HY-11077