CAS No. 209216-23-9

Batch: Purity:99.74
Entecavir Hydrate Chemical Structure
Chemical Structure
Check the Entecavir Hydrate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 2-amino-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylidenecyclopentyl]-1H-purin-6-one;hydrate
CAS Number 209216-23-9
Molecular Formula

C12H15N5O3.H2O

Molecular Weight (MW) 295.29
SMILES C=C1C(CC(C1CO)O)N2C=NC3=C2N=C(NC3=O)N.O
InChIKey YXPVEXCTPGULBZ-WQYNNSOESA-N

Ordering Information

Biological Activity

Entecavir Hydrate is a deoxyguanine nucleoside analogue that acts as a selective inhibitor of hepatitis B virus (HBV) polymerase. As a guanine analogue, it inhibits reverse transcription, viral DNA replication, and RNA transcription within the HBV replication process. By suppressing viral polymerase activity, entecavir hydrate blocks viral DNA synthesis, thereby inhibiting HBV replication and reducing viral propagation. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
1 mg 5 mg 10 mg
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 59 mg/mL (199.8 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.