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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.

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Product Number Image Product Name CAS No. Molecular Formula
Product Number:100048 ethinyl estradiol Product Name:ethinyl estradiol CAS No.:100048-N/A Molecular Formula:
Product Number:112021 Psoralen isoflavones Product Name:Psoralen isoflavones CAS No.:# Molecular Formula:
Product Number:101378 Ramipuri Product Name:Ramipuri CAS No.:101378-N/A Molecular Formula:
Product Number:PCL-#-Te152-25mg Tribulus terrestris saponin D Product Name:Tribulus terrestris saponin D CAS No.:179464-23-4 Molecular Formula:
Product Number:100046 Praziquantel Product Name:Praziquantel CAS No.:55268-74-1 Molecular Formula:
Product Number:PCL-#-Te148-25mg Tribulus terrestris saponin K Product Name:Tribulus terrestris saponin K CAS No.:193605-07-1 Molecular Formula:
Product Number:101376 Terbutaline sulfate impurity I (3,5-dihydroxy-ω-tert-butylaminoacetophenone) Product Name:Terbutaline sulfate impurity I (3,5-dihydroxy-ω-tert-butylaminoacetophenone) CAS No.:101376-N/A Molecular Formula:
Product Number:100045 Imidazole Product Name:Imidazole CAS No.:288-32-4 Molecular Formula:
Product Number:171267 2-Amino-5-nitrodiphenone (Nitrazepam impurity) Product Name:2-Amino-5-nitrodiphenone (Nitrazepam impurity) CAS No.:# Molecular Formula:
Product Number:171269 2-Amino-5-chlorobenzophenone (Chlordiazepoxide I) Product Name:2-Amino-5-chlorobenzophenone (Chlordiazepoxide I) CAS No.:# Molecular Formula:
Product Number:101386 Zolmitriptan R-isomer Product Name:Zolmitriptan R-isomer CAS No.:101386-N/A Molecular Formula:
Product Number:112014 Fucose (provisional) Product Name:Fucose (provisional) CAS No.:# Molecular Formula:
Product Number:101385 tropic acid Product Name:tropic acid CAS No.:529-64-6 Molecular Formula:
Product Number:100054 4-N-demethylamphetamine Product Name:4-N-demethylamphetamine CAS No.:100054-N/A Molecular Formula:
Product Number:PCL-#-Ay203-10mg Acid Yellow 36 Product Name:Acid Yellow 36 CAS No.:587-98-4 Molecular Formula:
Product Number:101384 Oseltamivir phosphate impurity III ((3R,4R,5S)-4-acetamido-5-amino-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid) Product Name:Oseltamivir phosphate impurity III ((3R,4R,5S)-4-acetamido-5-amino-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid) CAS No.:101384-N/A Molecular Formula:
Product Number:100053 kynurenine Product Name:kynurenine CAS No.:68-22-4 Molecular Formula:
Product Number:112016 hemoglobin chloride Product Name:hemoglobin chloride CAS No.:16009-13-5 Molecular Formula:
Product Number:101383 Oseltamivir phosphate impurity II (ethyl 3-hydroxy-4-acetamido benzoate) Product Name:Oseltamivir phosphate impurity II (ethyl 3-hydroxy-4-acetamido benzoate) CAS No.:101383-N/A Molecular Formula:
Product Number:100052 ethinylestradiol Product Name:ethinylestradiol CAS No.:57-63-6 Molecular Formula:
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