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Pharmaceutical Testing Reference Mterials

Pharmaceutical Reference Materials (PRMs) refer to substances with defined characteristic values used for calibrating instruments, evaluating measurement methods, or assigning values to tested pharmaceuticals in physical/chemical tests and biological assays specified by pharmacopoeial standards. These include reference standards, comparators, herbal reference materials, and reference preparations.

Hengyuan Fine Chemical specializes in providing cost-effective reference material solutions for pharmaceutical quality control, encompassing:

  • Drug testing reference standards
  • Pharmaceutical impurity reference standards
  • NIFDC-certified reference materials
  • Chemical analysis reference standards
  • Traditional Chinese Medicine (TCM) analytical standards
  • TCM reference standards
  • Herbal blank matrices for pesticide residue testing
  • Bio-peptide reference standards
All products under our PCL brand comply with both national standards and international guidelines. Our accreditations include:

  • CNAS certification (China National Accreditation Service for Conformity Assessment)
  • ISO 17034:2016 certification for reference material producers
  • ISO 9001:2015 quality management system certification We implement a comprehensive quality management system supported by Certificates of Analysis (COA), ensuring high purity (>98%), batch-to-batch consistency, and full traceability. Our solutions are widely applied in pharmaceutical R&D, QC testing, and analytical verification to enhance testing accuracy and operational efficiency.

Through our vertically integrated business model (R&D-production-sales), we eliminate intermediaries to deliver:

 ✓ Bulk supply capacities for routine QC needs 

✓ Custom synthesis services for specialized compounds 

✓ 30-50% cost reduction versus market averages 

✓ Streamlined procurement workflows 

This dual approach establishes economically optimized yet reliable quality control frameworks for clients across the pharmaceutical value chain.



Product Number Image Product Name CAS No. Molecular Formula
Product Number:PCL-#-Bz0062-50mg Acyclovir impurity N Product Name:Acyclovir impurity N CAS No.:N/A Molecular Formula:
Product Number:PCL-#-Bz0130-50mg Dihydroxypropyltheophylline impurity Product Name:Dihydroxypropyltheophylline impurity CAS No.:116131-08-9 Molecular Formula:
Product Number:PCL-#-Bz0392-50mg Cefmetazole sodium by-product II Product Name:Cefmetazole sodium by-product II CAS No.:74228-11-8 Molecular Formula:
Product Number:PCL-#-At104-100mg Atropine EP impurity F Product Name:Atropine EP impurity F CAS No.:51-34-3 Molecular Formula:
Product Number:PCL-#-Dz100-50mg 2,6-Dichlorobenzaldehyde Product Name:2,6-Dichlorobenzaldehyde CAS No.:83-38-5 Molecular Formula:
Product Number:PCL-#-Do209-100mg Doxophylline impurity 12 (chemical name: 5-(1,3-dimethylureido)-3-(1,3-dioxolan-2-yl)methyl-3H-imidazole-4-carboxylic acid) Product Name:Doxophylline impurity 12 (chemical name: 5-(1,3-dimethylureido)-3-(1,3-dioxolan-2-yl)methyl-3H-imidazole-4-carboxylic acid) CAS No.:2095554-12-2 Molecular Formula:
Product Number:PCL-#-Me111-100mg 4-(2-Methylpropoxy)benzylamine acetate Product Name:4-(2-Methylpropoxy)benzylamine acetate CAS No.:955997-89-4 Molecular Formula:
Product Number:PCL-#-Mp100-25mg 4-Methyl-2-pentanone (methyl isobutyl ketone) Product Name:4-Methyl-2-pentanone (methyl isobutyl ketone) CAS No.:108-10-1 Molecular Formula:
Product Number:PCL-#-Pr105-25mg Pramipexole impurity 31; N-(2-amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-acrylamide Product Name:Pramipexole impurity 31; N-(2-amino-4,5,6,7-tetrahydro-benzothiazol-6-yl)-acrylamide CAS No.:N/A Molecular Formula:
Product Number:PCL-#-Py012-20mg 2,6-Diamino-4-pyrimidinol Product Name:2,6-Diamino-4-pyrimidinol CAS No.:143504-99-8 Molecular Formula:
Product Number:PCL-#-At103-100mg Atropine EP impurity E Product Name:Atropine EP impurity E CAS No.:55869-99-3 Molecular Formula:
Product Number:PCL -#-M011-100mg (R)-(+)-tert-butylsulfinamide Product Name:(R)-(+)-tert-butylsulfinamide CAS No.:196929-78-9 Molecular Formula:
Product Number:PCL-Fl001-50mg 9-Fluorenylmethyl-N-succinimidyl carbonate Product Name:9-Fluorenylmethyl-N-succinimidyl carbonate CAS No.:82911-69-1 Molecular Formula:
Product Number:PCL-#-V017-20mg Vonorazan Impurities 35 Product Name:Vonorazan Impurities 35 CAS No.:N/A Molecular Formula:
Product Number:PCL-#-Bz0173-50mg 3-Hydroxyacetophenone Product Name:3-Hydroxyacetophenone CAS No.:121-71-1 Molecular Formula:
Product Number:PCL-#-Chp0380-25mg Naproxen impurityⅠ Product Name:Naproxen impurityⅠ CAS No.:3900-45-6 Molecular Formula:
Product Number:PCL-#-Fm0513-20mg N-alpha-fluorenylmethoxycarbonyl-N-in-tert-butoxycarbonyl-L-tryptophan Product Name:N-alpha-fluorenylmethoxycarbonyl-N-in-tert-butoxycarbonyl-L-tryptophan CAS No.:143824-78-6 Molecular Formula:
Product Number:PCL-#-Bz0241-50mg Atorvastatin impurity F Product Name:Atorvastatin impurity F CAS No.:1371615-56-3 Molecular Formula:
Product Number:PCL-#-Mp370-100mg Methyl p-toluenesulfonate Product Name:Methyl p-toluenesulfonate CAS No.:80-48-8 Molecular Formula:
Product Number:PCL-#-Ve011-100mg Venlafaxine hydrochloride impurity M Product Name:Venlafaxine hydrochloride impurity M CAS No.:N/A Molecular Formula:
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