CAS No. 226954-04-7

Batch: Purity:99.86
Emapunil (AC-5216) Chemical Structure
Chemical Structure
Check the Emapunil (AC-5216) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-benzyl-N-ethyl-2-(7-methyl-8-oxo-2-phenylpurin-9-yl)acetamide
CAS Number 226954-04-7
Molecular Formula

C23H23N5O2

Molecular Weight (MW) 401.46
SMILES CCN(CC1=CC=CC=C1)C(=O)CN2C3=NC(=NC=C3N(C2=O)C)C4=CC=CC=C4
InChIKey NBMBIEOUVBHEBM-UHFFFAOYSA-N

Ordering Information

Biological Activity

Emapunil (AC-5216) is a selective translocator protein (TSPO/MBR) ligand that binds rat brain MBR (Ki 0.297 nM) and inhibits binding in rat glioma cells (IC50 3.04 nM) and human glioma cells (IC50 2.73 nM). By targeting mitochondrial TSPO, Emapunil enhances neurosteroid synthesis and GABAergic neurotransmission, producing pronounced anxiolytic-like and antidepressant-like effects in preclinical models without inducing sedative or motor side effects. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 80 mg/mL (199.27 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.