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Hengyuan Fine Chemical is a leading supplier of reference materials and standards, specializing in providing high-precision and highly reliable solutions for industries such as environmental testing, food safety, and pharmaceutical research and development. We offer nearly 50,000 ready-to-ship products, including pharmaceutical impurity reference standards, chemical analysis reference standards, pharmacopoeial titrants, biopeptide reference standards, and more, meeting the testing needs of various industries.

With a craftsmanship spirit at our core, we are committed to refining every product to ensure its quality and accuracy. At the same time, we understand customer needs through in-depth communication, providing customized solutions and fast delivery services to support the efficient progress of your projects.

Hengyuan Fine Chemical—where precision becomes a habit and trust becomes a bond.


Product Number Image Product Name CAS No. Molecular Formula
Product Number: Sulfometuron-methyl Product Name:Sulfometuron-methyl CAS No.:74222-97-2 Molecular Formula:
Product Number: Sulfentrazone Product Name:Sulfentrazone CAS No.:122836-35-5 Molecular Formula:
Product Number: Sulfallate Product Name:Sulfallate CAS No.:34857 Molecular Formula:
Product Number: Sulcotrione Product Name:Sulcotrione CAS No.:99105-77-8 Molecular Formula:
Product Number: Spiroxamine Product Name:Spiroxamine CAS No.:118134-30-8 Molecular Formula:
Product Number: Spiromesifen Product Name:Spiromesifen CAS No.:283594-90-1 Molecular Formula:
Product Number: Spirodiclofen Product Name:Spirodiclofen CAS No.:148477-71-8 Molecular Formula:
Product Number: Spinosyn D Product Name:Spinosyn D CAS No.:131929-63-0 Molecular Formula:
Product Number: Spinosad A (Spinosyn A) Product Name:Spinosad A (Spinosyn A) CAS No.:131929-60-7 Molecular Formula:
Product Number: Simetryn Product Name:Simetryn CAS No.:1014-70-6 Molecular Formula:
Product Number: Simeconazole Product Name:Simeconazole CAS No.:149508-90-7 Molecular Formula:
Product Number: Simazine Product Name:Simazine CAS No.:122-34-9 Molecular Formula:
Product Number: Siduron Product Name:Siduron CAS No.:1982-49-6 Molecular Formula:
Product Number: Sethoxydim Product Name:Sethoxydim CAS No.:74051-80-2 Molecular Formula:
Product Number: Secbumeton Product Name:Secbumeton CAS No.:26259-45-0 Molecular Formula:
Product Number: Sebuthylazine-desethyl Product Name:Sebuthylazine-desethyl CAS No.:37019-18-4 Molecular Formula:
Product Number: Sebuthylazine Product Name:Sebuthylazine CAS No.:7286-69-3 Molecular Formula:
Product Number: Rotenone Product Name:Rotenone CAS No.:83-79-4 Molecular Formula:
Product Number: Rimsulfuron Product Name:Rimsulfuron CAS No.:122931-48-0 Molecular Formula:
Product Number: Quizalofop-P-tefuryl Product Name:Quizalofop-P-tefuryl CAS No.:200509-41-7 Molecular Formula:
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