SMILES:

CN1CCC(CC1)NC2=NC=C3N=CN=C(NC4=CC=C(F)C(=C4)Cl)C3=N2
Falnidamol Chemical Structure
Chemical Structure
Check the Falnidamol product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 4-N-(3-chloro-4-fluorophenyl)-6-N-(1-methylpiperidin-4-yl)pyrimido[5,4-d]pyrimidine-4,6-diamine
CAS Number 196612-93-8
Molecular Formula

C18H19ClFN7
Molecular Weight (MW) 387.84
SMILES CN1CCC(CC1)NC2=NC=C3N=CN=C(NC4=CC=C(F)C(=C4)Cl)C3=N2
InChIKey FTFRZXFNZVCRSK-UHFFFAOYSA-N

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 20 mg/mL (51.56 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 3 mg/mL
Water 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.