NIBR0213 

NIBR-0213 is a potent, orally active and selective S1P1 antagonist with efficacy in experimental autoimmune encephalomyelitis. NIBR-0213 displays potent and comparable potency on human and rat S1P1 (IC₅₀ of 2.0 nM and 2.3 nM, respectively) in GTPγ³⁵S assays^[1].

NIBR-0213 displays an inhibitory activity on hS1P1 with an IC₅₀ of 2.5 nM whereas it is inactive (IC₅₀ >10 μM) on S1P2, S1P3, and S1P4 in Ca²⁺ mobilization assays^[1].
NIBR-0213 displays potent and comparable potency on human and rat S1P1 (IC₅₀ of 2.0 nM and 2.3 nM, respectively) in GTPγ³⁵S assays, whereas on mouse S1P1 with an IC₅₀ of 8.5 nM^[1].
NIBR-0213 shows an ∼3,000-fold selectivity against human S1P5 in the GTPγ³⁵S assay^[1].
NIBR-0213 is a competitive S1P1 antagonist with a calculated K_d of 0.37±0.031 nM^[1].

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

NIBR-0213 (given orally at 30 mg/kg to rats) reduces the peripheral blood lymphocyte (PBL) counts by 75%-85% within 14 hr and maintained this effect up to 24 hr posttreatment^[1].
NIBR-0213 (30 mg/kg and 60 mg/kg) is efficacious when given therapeutically in a mouse experimental autoimmune encephalomyelitis (EAE) model^[1].
The PK properties of NIBR-0213 shows a moderate clearance (26 mL/min/kg) and a high oral bioavailability (69%), leading to significant exposure after oral dosing^[1].

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

464.98

C₂₇H₂₉ClN₂O₃

1233332-14-3

Solid

Off-white to light yellow

ClC1=CC=C([C@@H](C)NC2=CC=CC(C3=CC(C)=C(C(N[C@@H](C)C(O)=O)=O)C(C)=C3)=C2)C=C1C

Room temperature in continental US; may vary elsewhere.

-20°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. Jean Quancard, et al. A potent and selective S1P(1) antagonist with efficacy in experimental autoimmune encephalomyelitis. Chem Biol. 2012 Sep 21;19(9):1142-51.  [Content Brief]