CAS No. 138977-28-3

Batch: Purity:99.66
Capsazepine Chemical Structure
Chemical Structure
Check the Capsazepine product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-[2-(4-chlorophenyl)ethyl]-7,8-dihydroxy-1,3,4,5-tetrahydro-2-benzazepine-2-carbothioamide
CAS Number 138977-28-3
Molecular Formula

C19H21ClN2O2S

Molecular Weight (MW) 376.90
SMILES C1CC2=CC(=C(C=C2CN(C1)C(=S)NCCC3=CC=C(C=C3)Cl)O)O
InChIKey DRCMAZOSEIMCHM-UHFFFAOYSA-N

Ordering Information

Biological Activity

Capsazepine is a synthetic compound that acts as a competitive antagonist of the transient receptor potential vanilloid 1 (TRPV1) channel. It selectively inhibits capsaicin-induced channel activation, thereby suppressing intracellular calcium influx and the subsequent depolarization of primary sensory neurons. By attenuating TRPV1-mediated nociceptive pathway signaling, capsazepine blocks capsaicin-evoked membrane currents, cellular excitation, and nociceptive responses in rodent pain models. [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 Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous 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.