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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:171241 ephedrine hydrochloride Product Name:ephedrine hydrochloride CAS No.:# Molecular Formula:
Product Number:112040 Donkey-derived peptide A1 Product Name:Donkey-derived peptide A1 CAS No.:# Molecular Formula:
Product Number:112041 Donkey-derived peptide A2 Product Name:Donkey-derived peptide A2 CAS No.:# Molecular Formula:
Product Number:PCL-#-Tr303-10mg hydromelitic acid Product Name:hydromelitic acid CAS No.:31795-12-7 Molecular Formula:
Product Number:100069 doxepin hydrochloride Product Name:doxepin hydrochloride CAS No.:100069-N/A Molecular Formula:
Product Number:101399 2-Chloro-N,N-diethylethylamine hydrochloride (amiodarone impurity I hydrochloride) Product Name:2-Chloro-N,N-diethylethylamine hydrochloride (amiodarone impurity I hydrochloride) CAS No.:101399-N/A Molecular Formula:
Product Number:100068 Doxapram hydrochloride Product Name:Doxapram hydrochloride CAS No.:100068-N/A Molecular Formula:
Product Number:171240 (-)-4,5α-Epoxy-3,14-dihydroxymorphinan-6-one (naloxone hydrochloride impurity) Product Name:(-)-4,5α-Epoxy-3,14-dihydroxymorphinan-6-one (naloxone hydrochloride impurity) CAS No.:33522-95-1 Molecular Formula:
Product Number:101398 p-Chloroaniline Product Name:p-Chloroaniline CAS No.:106-47-8 Molecular Formula:
Product Number:100067 Benzhexol hydrochloride Product Name:Benzhexol hydrochloride CAS No.:52-49-3 Molecular Formula:
Product Number:171249 Naltrexone hydrochloride Product Name:Naltrexone hydrochloride CAS No.:16676-29-2 Molecular Formula:
Product Number:171246 Lofexidine hydrochloride Product Name:Lofexidine hydrochloride CAS No.:21498-08-8 Molecular Formula:
Product Number:171247 Mephedrine hydrochloride Product Name:Mephedrine hydrochloride CAS No.:# Molecular Formula:
Product Number:112035 Horse-derived oligopeptide A Product Name:Horse-derived oligopeptide A CAS No.:# Molecular Formula:
Product Number:PCL-#-Bi254-20mg Bilirubin Product Name:Bilirubin CAS No.:635-65-4 Molecular Formula:
Product Number:112036 isofosfomycin Product Name:isofosfomycin CAS No.:# Molecular Formula:
Product Number:100076 levonorgestrel Product Name:levonorgestrel CAS No.:797-63-7 Molecular Formula:
Product Number:112037 4-Coumaric acid Product Name:4-Coumaric acid CAS No.:501-98-4 Molecular Formula:
Product Number:100075 fluorescein Product Name:fluorescein CAS No.:100075-N/A Molecular Formula:
Product Number:PCL-#-P976-20mg Pusaethoside Product Name:Pusaethoside CAS No.:118555-82-1 Molecular Formula:
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