CAS No. 60-56-0

Batch: Purity:99.98
Methimazole  Chemical Structure
Chemical Structure
Check the Methimazole product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 3-methyl-1H-imidazole-2-thione
CAS Number 60-56-0
Molecular Formula

C4H6N2S

Molecular Weight (MW) 114.17
SMILES CN1C=CNC1=S
InChIKey PMRYVIKBURPHAH-UHFFFAOYSA-N

Ordering Information

Biological Activity

Methimazole is an antithyroid agent that acts as an inhibitor of thyroperoxidase. By blocking thyroperoxidase-catalyzed iodination of tyrosine residues on thyroglobulin, methimazole prevents the organification of iodide. This inhibition disrupts the enzymatic synthesis of the essential thyroid hormones triiodothyronine and thyroxine. Consequently, depletion of hormone production leads to suppressed thyroid hormone levels and reduced cellular metabolism. [1]

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 23 mg/mL (201.45 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 23 mg/mL
Ethanol 23 mg/mL
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).

Aliquotting Service

Free Aliquotting Service

Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.

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