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Elagolix sodium

Cat. No. M9196
Elagolix sodium Structure

NBI56418; ABT-620

Size Price Availability Quantity
5mg USD 106 In stock
10mg USD 195 In stock
50mg USD 485 In stock
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

Elagolix displays high affinity in a competition binding assay for hGnRH-R (Ki = 0.90 nM) and low CYP3A4 inhibition (IC50 = 56 μM). Elagolix is highly selective at hGnRH-R, its wider receptor selectivity is tested at a concentration of 10 μM in a panel of radioligand binding assays for 100 off-target receptors, ion channels, enzymes, and transporters, and significant activity is not observed (inhibition <50%).

In vivo, oral administration of Elagolix suppresses luteinizing hormone in castrated macaques. Elagolix shows good efficacy in suppressing luteinizing hormone in monkeys and exhibits high oral bioavailability in dogs (~100% when dosed via oral gavage at 50 mg/kg).

Cell Experiment
Cell lines RBL-1 cells stably expressing the human cloned GnRH receptor
Preparation method RBL-1 cells stably expressing the human cloned GnRH receptor are seeded into 96 well plates at a density of 15 000 cells per well in inositol-free DMEM containing 10% dialyzed FBS, 10 mM HEPES, 2 mM L-glutamine, 1 mM sodium pyruvate, 0.1 mM nonessential amino acids, and 50 μg/mL penicillin/streptomycin and are labeled for 48 h with 0.2 μCi myo-2-[3H]inositol. The cells are washed once in PBS and pretreated with assay buffer (140 mM NaCl, 4 mM KCl, 20 mM HEPES, 8.3 mM glucose, 1 mM MgCl2, 1 mM CaCl2, 10 mM LiCl, and 0.1% BSA) for 15-60 min at 37 °C. The cells are then stimulated with GnRH (6 nM) in the presence or absence of antagonist and incubated for 60 min at 37°C. Cells are extracted with 10 mM formic acid at 4°C for 30 min, and the lysate is loaded onto Millipore plates containing 20 μg of Dowex AG1-X8 resin. The plate is washed once in H2O and once in 60 mM ammonium formate/5 mM sodium tetraborate, and inositol phosphates are eluted with 1 M ammonium formate/0.1 M formic acid. The eluate is transferred to a Lumaplate and counted in a TopCount NXT.
Concentrations -
Incubation time 1 h
Animal Experiment
Animal models Rhesus Monkey
Formulation water or 5% cromophore (For i.v. formulation); a sterile water solution (For oral formulation)
Dosages 10 and 50 mg/kg (oral); 3 and 10 mg/kg (i.v.)
Administration p.o. or i.v.
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 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.

Chemical Information
Molecular Weight 653.57
Formula C32H29F5N3O5.Na
CAS Number 832720-36-2
Purity >98%
Solubility DMSO: ≥ 85 mg/mL
Storage at -20°C

Discovery of sodium R-(+)-4-{2-[5-(2-fluoro-3-methoxyphenyl)-3-(2-fluoro-6-[trifluoromethyl]benzyl)-4-methyl-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-1-phenylethylamino}butyrate (elagolix), a potent and orally available nonpeptide antagonist of the human gonadotropin-releasing hormone receptor.
Chen C, et al. J Med Chem. 2008 Dec 11;51(23):7478-85. PMID: 19006286.

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Keywords: Elagolix sodium, NBI56418; ABT-620 supplier, Estrogen Receptor, inhibitors

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