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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: Prothioconazole Product Name:Prothioconazole CAS No.:178928-70-6 Molecular Formula:
Product Number: Prosulfuron Product Name:Prosulfuron CAS No.:94125-34-5 Molecular Formula:
Product Number: Prosulfocarb Product Name:Prosulfocarb CAS No.:52888-80-9 Molecular Formula:
Product Number: Propyzamide Product Name:Propyzamide CAS No.:23950-58-5 Molecular Formula:
Product Number: Propoxur Product Name:Propoxur CAS No.:114-26-1 Molecular Formula:
Product Number: Propiconazole Product Name:Propiconazole CAS No.:60207-90-1 Molecular Formula:
Product Number: Propham Product Name:Propham CAS No.:122-42-9 Molecular Formula:
Product Number: Propetamphos Product Name:Propetamphos CAS No.:31218-83-4 Molecular Formula:
Product Number: Propazine Product Name:Propazine CAS No.:139-40-2 Molecular Formula:
Product Number: Propargite Product Name:Propargite CAS No.:2312-35-8 Molecular Formula:
Product Number: Propaquizafop Product Name:Propaquizafop CAS No.:111479-05-1 Molecular Formula:
Product Number: Propanil Product Name:Propanil CAS No.:709-98-8 Molecular Formula:
Product Number: Propamocarb Product Name:Propamocarb CAS No.:24579-73-5 Molecular Formula:
Product Number: Propachlor Product Name:Propachlor CAS No.:1918-16-7 Molecular Formula:
Product Number: Prometryn Product Name:Prometryn CAS No.:7287-19-6 Molecular Formula:
Product Number: Prometon Product Name:Prometon CAS No.:1610-18-0 Molecular Formula:
Product Number: Promecarb Product Name:Promecarb CAS No.:2631-37-0 Molecular Formula:
Product Number: Profenofos Product Name:Profenofos CAS No.:41198-08-7 Molecular Formula:
Product Number: Procymidone Product Name:Procymidone CAS No.:32809-16-8 Molecular Formula:
Product Number: Prochloraz Product Name:Prochloraz CAS No.:67747-09-5 Molecular Formula:
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