Chemwill Asia co.,Ltd is one of the leading manufacturer  in CHINA. 

Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary,  Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place. 

Our R&D team masters core technology for process-design of target building block as well as Tailor-made fine chemicals. Our manufactory specialised in extreme temperature conditions (-100ºC to +300ºC), hydrogenations reaction under high pressure, suzuki coupling reaction, photochemical reaction, Mitsunobu reactions, enantioselective reactions and asymmetric synthesis. 

1.Client is first.

2.Credibility is the most important.

3.Quality control is our life.

4.Great sense of responsibility.

5.We will be responsible for not only our products, our clients, also the society.

The corporation's destination: we will constantly strive to supply customers with new and high-tech products and will keep the leadership in the field. 

Coumarin is white crystal, citronella aroma, and slightly medicinal fragrance. Insoluble in cold water, soluble in hot water, ethanol, ether, chloroform.

Coumarin was discovered in black coumarin in 1820. Coumarin is found in many plants in the form of glycosides. Strong aromas of black bean, fresh mowing sweetness and chocolate, long lasting. The fresh hay aroma is largely due to the formation and release of coumarin when glycosides are decomposed by fermentation during the drying of fresh mowing. Coumarin is used to make spices. Commonly used in the preparation of new mowed and flat spices. As well as violet, sunflower, vegetable Chemicalbook heart orchid, hawthorn flower, orchid, lavender and other essences. It can be used with vanillin as a flavoring for confectionery, pastries and the like, and added to tobacco to add a natural flavor. In galvanizing (or cadmium, nickel) electroplating solution to add coumarin, can reduce the plating hole, increase brightness. Coumarin is the raw material for other flavors and a variety of other chemicals. Coumarin is the parent of a large class of derivatives. Some of these derivatives occur in nature, while others are synthesized.