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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: Quizalofop-methyl Product Name:Quizalofop-methyl CAS No.:76578-13-7 Molecular Formula:
Product Number: Quizalofop-ethyl Product Name:Quizalofop-ethyl CAS No.:76578-14-8 Molecular Formula:
Product Number: Quinoxyfen Product Name:Quinoxyfen CAS No.:124495-18-7 Molecular Formula:
Product Number: Quinmerac Product Name:Quinmerac CAS No.:90717-03-6 Molecular Formula:
Product Number: Quinalphos Product Name:Quinalphos CAS No.:13593-03-8 Molecular Formula:
Product Number: Pyroquilon Product Name:Pyroquilon CAS No.:57369-32-1 Molecular Formula:
Product Number: Pyriproxyfen Product Name:Pyriproxyfen CAS No.:95737-68-1 Molecular Formula:
Product Number: Pyrimethanil Product Name:Pyrimethanil CAS No.:53112-28-0 Molecular Formula:
Product Number: Pyriftalid Product Name:Pyriftalid CAS No.:135186-78-6 Molecular Formula:
Product Number: Pyrifenox Product Name:Pyrifenox CAS No.:88283-41-4 Molecular Formula:
Product Number: Pyridate Product Name:Pyridate CAS No.:55512-33-9 Molecular Formula:
Product Number: Pyridaphenthion Product Name:Pyridaphenthion CAS No.:119-12-0 Molecular Formula:
Product Number: 6-Chloro-4-hydroxy-3-phenyl-pyridazine Product Name:6-Chloro-4-hydroxy-3-phenyl-pyridazine CAS No.:40020-01-7 Molecular Formula:
Product Number: Pyridaben Product Name:Pyridaben CAS No.:96489-71-3 Molecular Formula:
Product Number: Pyrazosulfuron-ethyl Product Name:Pyrazosulfuron-ethyl CAS No.:93697-74-6 Molecular Formula:
Product Number: Pyrazophos Product Name:Pyrazophos CAS No.:13457-18-6 Molecular Formula:
Product Number: Pyrazolynate Product Name:Pyrazolynate CAS No.:58011-68-0 Molecular Formula:
Product Number: Pyraclostrobin Product Name:Pyraclostrobin CAS No.:175013-18-0 Molecular Formula:
Product Number: Pyracarbolid Product Name:Pyracarbolid CAS No.:24691-76-7 Molecular Formula:
Product Number: Pymetrozine Product Name:Pymetrozine CAS No.:123312-89-0 Molecular Formula:
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