
Methimazole CAS 60-56-0 | ≥99% Purity
Basic Info of Methimazole
| Property | Detail |
|---|---|
| Product Name | Methimazole |
| CAS Number | 60-56-0 |
| Molecular Formula | C₄H₆N₂S |
| Molecular Weight | 114.17 g/mol |
| Chemical Name | 1-Methylimidazole-2-thiol |
| Synonyms | Thiamazole, 2-Mercapto-1-methylimidazole, Favistan |
| Appearance | White to off-white crystalline powder |
| Melting Point | 142-146°C |
| Purity | ≥99% (HPLC) |
| Solubility | Freely soluble in water; soluble in ethanol |
| Loss on Drying | ≤0.5% |
| Residue on Ignition | ≤0.1% |
| Heavy Metals | ≤20 ppm |
| Storage | Sealed container, cool & dry place |
| Shelf Life | 24 months under proper storage |
What is Methimazole ?
Methimazole (CAS 60-56-0, C ₄ H ₆ N TWO S, MW 114.17) is a white, crystalline thioamide that is freely soluble in water. Its chemical identity is 1-methylimidazole-2-thiol, and it is additionally commonly referred to as Thiamazole. The substance is a 5-membered ring structure that varies from the thiouracil collection.
Methimazole functions as a potent prevention of thyroid hormonal agent synthesis by interfering with the consolidation of iodine right into tyrosine residues in thyroglobulin. It particularly targets the enzyme thyroperoxidase (TPO), which militarizes the iodination of tyrosine and the coupling of iodotyrosines to create T3 and T4. Unlike some antithyroid representatives, methimazole does not suspend existing thyroxine (T4) or tri-iodothyronine (T3) stored in the thyroid or flowing in the blood.
Secret Applications
Drug API:
Made use of in the treatment of hyperthyroidism, including Graves’ illness, poisonous multinodular goiter, and thyroid storm. The usual adult upkeep dose varies from 5 to 15 mg daily.
Organic Synthesis Intermediate:
Functions as a building block for synthesizing other pharmaceutical substances and agrochemicals.
Steel Ion Chelator:
Features as a chelating representative for steel ions in research applications.
Analytical Recommendation Criterion:
Used as a criterion for HPLC and LC-MS techniques in quality assurance and contamination profiling. A qualified recommendation material (1000 μg/ mL in methanol) is available for analytical approach development and recognition.
Product Packaging
If you want to buy Methimazole , pls contact us to get a free quote.
Superior Methimazole Series | Reliable Quality & Sufficient Supply
Top Quality You Can Count On
We supply methimazole with ≥ 99% purity confirmed by HPLC. Each batch undertakes rigorous quality screening covering look (white crystalline powder), melting point (142-146 ° C), and assay. A complete Certificate of Evaluation (COA) accompanies every shipment, ensuring traceability and batch-to-batch uniformity.
Stock and Supply Chain
We maintain supply at our main storage facility. Standard packaging includes 5g, 25g, 100g, 500g, and bulk dimensions. Research amounts ship within 1-2 service days. Mass orders call for 5-7 service days processing. Products are kept in a great, completely dry location in secured containers to maintain security.
Technical Support
Our technical team offers assistance for methimazole in pharmaceutical formulation, natural synthesis, and analytical applications. Total paperwork including COA and MSDS comes with every delivery.
FAQ
Methimazole is also known as Thiamazole, 1-methylimidazole-2-thiol, 2-mercapto-1-methylimidazole, and Favistan. The USP designation is Methimazole Tablets, USP.
We provide ≥ 99% pureness (HPLC). Packaging consists of 5g, 25g, 100g, 500g, and mass alternatives. Custom-made product packaging is offered upon request.
Store in a secured container in an awesome, dry area. Avoid strong oxidizing agents. Under appropriate problems, the product remains steady for 12-24 months.
Requirement MOQ: 5g for study. Stock things ship within 1-2 organization days. Bulk orders require 5-7 company days processing. Get in touch with us for details prices and availability.
References
The Manager has Something to Say

This is William, CEO of Zhishang Chemical Co., Ltd.
Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.
Methimazole Supplier and Manufacturer
As a Methimazole supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best Methimazole raw materials to customers all over the world.
Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.
If you have a demand for Methimazole and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.
Our laboratory




Certificates and patents
















