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GRA Ex-25

Cat. No. M8940
GRA Ex-25 Structure
Size Price Availability Quantity
5mg USD 166.5  USD185 In stock
10mg USD 234  USD260 In stock
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

GRA Ex-25 is an inhibitor of glucagon receptor. GRA Ex-25 binds a human glucagon receptor (h-GlucRbind) with Ki of 63 nM and a moderate glucagon induced adenylate cyclase inhibition (h-GlucRcyclase) with Ki of 254 nM under our assay conditions.

In vivo: GRA Ex-25 (3 mg/kg, i.v.) significantly reduces blood glucose caused by exogenous administration of glucagon in rat model. GRA Ex-25 is able to inhibit the rise in blood glucose levels elicited by exogenous administered glucagon, most likely because of the direct inhibition of glucagon stimulated hepatic glucose output.

Cell Experiment
Cell lines
Preparation method
Incubation time
Animal Experiment
Animal models Non-fasted male Sprague Dawley rats (200 g)
Dosages 0, 1, 3, 10 and 30 mg/kg
Administration acatheter inserted in a jugular vein
Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
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.

Chemical Information
Molecular Weight 563.61
Formula C29H36F3N3O5
CAS Number 307983-31-9
Purity >98%
Solubility DMSO: ≥ 20 mg/mL
Storage at -20°C

Glucagon receptor antagonism induces increased cholesterol absorption.
Guan HP, et al. J Lipid Res. 2015 Nov;56(11):2183-95. PMID: 26373568.

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Keywords: GRA Ex-25 supplier, Glucagon Receptor, inhibitors

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