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-#-Ch040-1g		Product Name:2-chloropropane	CAS No.:75-29-6	Molecular Formula:
Product Number:190096		Product Name:Triethyl citrate	CAS No.:#	Molecular Formula:
Product Number:PCL-#-Pe022-100mg		Product Name:2-Methoxy-5-(pyridin-2-yl)pyridine (pirempanel SM01-3)	CAS No.:381725-49-1	Molecular Formula:
Product Number:PCL-#-Co360-20mg		Product Name:Coumarin 6	CAS No.:38215-36-0	Molecular Formula:
Product Number:PCL-#-Et001-100mg		Product Name:4-ethylmorpholine	CAS No.:100-74-3	Molecular Formula:
Product Number:PCL-#-Pe101-2g		Product Name:Polyethylene glycol 3350	CAS No.:25322-68-3	Molecular Formula:
Product Number:PCL-#-Nd101-5ml		Product Name:N,N-Diisopropylethylamine; Ethyl-N,N-diisopropylamine	CAS No.:7087-68-5	Molecular Formula:
Product Number:PCL-#-Gu001-125mg		Product Name:guanfacine hydrochloride	CAS No.:29110-48-3	Molecular Formula:
Product Number:PCL-#-Di095-50mg		Product Name:Donepezil impurities;	CAS No.:2107-70-2	Molecular Formula:
Product Number:101208		Product Name:Amiodarone hydrochloride impurity II	CAS No.:101208-N/A	Molecular Formula:
Product Number:PCL-#-Py004-500mg		Product Name:5-(2-Fluorophenyl)-1-[(pyridin-3-yl)sulfonyl]-1H-pyrrole-3-carbaldehyde	CAS No.:881677-11-8	Molecular Formula:
Product Number:PCL-#-Ac987-25mg		Product Name:2-Amino-6-acetyl-4,5,6,7-tetrahydrobenzothiazole; 2-Amino-6-acetyl-4,5,6,7-tetrahydrobenzothiazole; 2-Amino-6-acetyl-4,5,6,7-tetrahydrobenzothiazol	CAS No.:106006-80-8	Molecular Formula:
Product Number:PCL-#-Me084-50mg		Product Name:Venlafaxine EP impurity C; 1-[2-Amino-1-(4-methoxyphenyl)ethyl]cyclohexanol	CAS No.:93413-77-5	Molecular Formula:
Product Number:PCL-#-Va003-50mg		Product Name:Vadixib isomers	CAS No.:181695-72-7	Molecular Formula:
Product Number:PCL-#-Ch180-20mg		Product Name:Chondroitin A sulfate	CAS No.:39455-18-0	Molecular Formula:
Product Number:PCL-#-Me066-25mg		Product Name:N-methylimidazole	CAS No.:616-47-7	Molecular Formula:
Product Number:PCL-#-Di807-100mg		Product Name:2,4-Diaminotoluene	CAS No.:95-80-7	Molecular Formula:
Product Number:PCL-#-Ph034-20mg		Product Name:phenylhydrazine; hydrazinobenzene	CAS No.:100-63-0	Molecular Formula:
Product Number:PCL-#-DM041-100mg		Product Name:D-mannose	CAS No.:3458-28-4	Molecular Formula:
Product Number:PCL-#-Ai223-25mg		Product Name:Acetaminophen EP impurity C	CAS No.:3964-54-3	Molecular Formula:

1. <
2. 379
3. 380
4. 381
5. 382
6. 383
7. >
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660