Our Services

We not only specialize in supplying high-quality impurity standards but also customized synthesis of impurity standards. The volume of our products ranges from milligram to kilogram scales. Our customers come from pharmaceutical and biotech companies, research institutions and so on. Our successful business development is rooted in our high-quality and professional attitude towards service and scientific innovation. Since its founding, Toref has been devoting itself to developing our proprietary technologies alongside the latest in pharmaceutical technological developments, while realizing a scalable and flexible production model to meet all of our customers’ requirements.

Toref is privileged to provide our customers with the most cost-efficient superior services as follows:


Impurity Standards Sourcing

With a focused team of sourcing experts in China, we utilize our considerable knowledge base to supply impurities beyond our catalog range and current manufacturing products.


Customized Synthesis of Impurities

Toref has all the experience, resources and expertise required to meet your custom synthesis and manufacturing needs of pharmaceutical impurity standards.

Impurity Isolation & Purification

With modern scientific equipments, Toref can help you to isolate and purify your compound if its purity is inadequate for your application or for characterization.

Let's Collaborate

You can contact us at any time and ask your questions. Our professional support representative will answer your questions with great pleasure.