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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: Pentoxazone Product Name:Pentoxazone CAS No.:110956-75-7 Molecular Formula:
Product Number: Penoxsulam Product Name:Penoxsulam CAS No.:219714-96-2 Molecular Formula:
Product Number: Pendimethalin Product Name:Pendimethalin CAS No.:40487-42-1 Molecular Formula:
Product Number: Pencycuron Product Name:Pencycuron CAS No.:66063-05-6 Molecular Formula:
Product Number: Penconazole Product Name:Penconazole CAS No.:66246-88-6 Molecular Formula:
Product Number: Pebulate Product Name:Pebulate CAS No.:1114-71-2 Molecular Formula:
Product Number: parathion-Methyl Product Name:parathion-Methyl CAS No.:298-00-0 Molecular Formula:
Product Number: Paclobutrazol Product Name:Paclobutrazol CAS No.:76738-62-0 Molecular Formula:
Product Number: Demeton-S-methyl-sulfoxide Product Name:Demeton-S-methyl-sulfoxide CAS No.:301-12-2 Molecular Formula:
Product Number: Oxycarboxin Product Name:Oxycarboxin CAS No.:5259-88-1 Molecular Formula:
Product Number: Oxaziclomefone Product Name:Oxaziclomefone CAS No.:153197-14-9 Molecular Formula:
Product Number: Oxasulfuron Product Name:Oxasulfuron CAS No.:144651-06-9 Molecular Formula:
Product Number: Oxamyl-oxime Product Name:Oxamyl-oxime CAS No.:30558-43-1 Molecular Formula:
Product Number: Oxamyl Product Name:Oxamyl CAS No.:23135-22-0 Molecular Formula:
Product Number: Oxadixyl Product Name:Oxadixyl CAS No.:77732-09-3 Molecular Formula:
Product Number: Oryzalin Product Name:Oryzalin CAS No.:19044-88-3 Molecular Formula:
Product Number: Orbencarb Product Name:Orbencarb CAS No.:34622-58-7 Molecular Formula:
Product Number: Omethoate Product Name:Omethoate CAS No.:1113-02-6 Molecular Formula:
Product Number: Ofurace Product Name:Ofurace CAS No.:58810-48-3 Molecular Formula:
Product Number: Nuarimol Product Name:Nuarimol CAS No.:63284-71-9 Molecular Formula:
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