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:PCL-#-Rd012		Product Name:Acetanilide Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd021		Product Name:Dicyandiamide Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd001		Product Name:Benzophenone Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:GBW(E)082643		Product Name:Nitrite ion solution standard substance	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd011		Product Name:Azobenzene Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:GBW(E)084807		Product Name:Chemical oxygen demand (CODcr) solution standard substance 9	CAS No.:	Molecular Formula:
Product Number:GBW(E)084809		Product Name:Chemical oxygen demand (CODcr) solution standard substance 8	CAS No.:	Molecular Formula:
Product Number:GBW(E)084810		Product Name:Chemical oxygen demand (CODcr) solution standard substance 7	CAS No.:	Molecular Formula:
Product Number:GBW(E)084811		Product Name:Chemical oxygen demand (CODcr) solution standard substance 6	CAS No.:	Molecular Formula:
Product Number:GBW(E)084808		Product Name:Chemical oxygen demand (CODcr) solution standard substance 5	CAS No.:	Molecular Formula:
Product Number:GBW(E)084812		Product Name:Chemical oxygen demand (CODcr) solution standard substance 4	CAS No.:	Molecular Formula:
Product Number:GBW(E)084813		Product Name:Chemical oxygen demand (CODcr) solution standard substance 3	CAS No.:	Molecular Formula:
Product Number:GBW(E)081786		Product Name:Chemical oxygen demand (CODcr) solution standard substance 2	CAS No.:	Molecular Formula:
Product Number:GBW(E)084814		Product Name:Chemical oxygen demand (CODcr) solution standard substance 1	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd008		Product Name:Carbazole Melting Point Standards	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd020		Product Name:Imidazole Melting Point Standards	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd002		Product Name:p-Nitrotoluene Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd016		Product Name:p-Nitrobenzoic Acid Melting Point Standard	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd015		Product Name:Adipic Acid Melting Point Standards	CAS No.:	Molecular Formula:
Product Number:PCL-#-Rd022		Product Name:Lauric Acid Melting Point Standard	CAS No.:	Molecular Formula:

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