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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: Probenazole Product Name:Probenazole CAS No.:27605-76-1 Molecular Formula:
Product Number: Primisulfuron-methyl Product Name:Primisulfuron-methyl CAS No.:86209-51-0 Molecular Formula:
Product Number: Pirimiphos-methyl Product Name:Pirimiphos-methyl CAS No.:29232-93-7 Molecular Formula:
Product Number: Pirimiphos-ethyl Product Name:Pirimiphos-ethyl CAS No.:23505-41-1 Molecular Formula:
Product Number: Pirimicarb Product Name:Pirimicarb CAS No.:23103-98-2 Molecular Formula:
Product Number: Piperophos Product Name:Piperophos CAS No.:24151-93-7 Molecular Formula:
Product Number: Piperonyl butoxide Product Name:Piperonyl butoxide CAS No.:18693 Molecular Formula:
Product Number: Picoxystrobin Product Name:Picoxystrobin CAS No.:117428-22-5 Molecular Formula:
Product Number: Picolinafen Product Name:Picolinafen CAS No.:137641-05-5 Molecular Formula:
Product Number: Picloram Product Name:Picloram CAS No.:6607 Molecular Formula:
Product Number: Phoxim Product Name:Phoxim CAS No.:14816-18-3 Molecular Formula:
Product Number: Phosphamidon Product Name:Phosphamidon CAS No.:13171-21-6 Molecular Formula:
Product Number: Phosmet-oxon Product Name:Phosmet-oxon CAS No.:3735-33-9 Molecular Formula:
Product Number: Phosmet Product Name:Phosmet CAS No.:732-11-6 Molecular Formula:
Product Number: Phosalone Product Name:Phosalone CAS No.:2310-17-0 Molecular Formula:
Product Number: Phorate-sulfoxide Product Name:Phorate-sulfoxide CAS No.:2588-03-6 Molecular Formula:
Product Number: Phorate-sulfone Product Name:Phorate-sulfone CAS No.:2588-04-7 Molecular Formula:
Product Number: Phorate Product Name:Phorate CAS No.:298-02-2 Molecular Formula:
Product Number: Phenthoate Product Name:Phenthoate CAS No.:254642 Molecular Formula:
Product Number: Phenmedipham Product Name:Phenmedipham CAS No.:13684-63-4 Molecular Formula:
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