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Analytical reference standards

How to Choose an Analytical Reference Standard Supplier？

Analytical reference standards are critical components of quality assurance in laboratories. These standards are defined and supplied by manufacturers with accompanying Certificates of Analysis (COA). Key factors to consider when selecting a supplier include purity, stability, traceability, applicability, and supplier credibility. Analytical standards must exhibit high purity to ensure accuracy and reliability in test results. Additionally, they should maintain stability over time, preserving their chemical properties and concentration under specified storage conditions.

Hengyuan Fine Chemical’s PCL Brand
PCL, produced by Sichuan Purechemland Reference Materials Co., Ltd., is a trusted supplier of analytical reference standards. As a National Reference Material Development Unit, China Chemical Reagent Industry Association member, and AAA Credit Enterprise, PCL operates with full certifications:

CNAS accreditation
ISO 17034:2016 (Reference Material Producer certification)
ISO 9001:2015 (Quality Management System for R&D and sales)
Multiple independent intellectual property rights

Equipped with advanced analytical instruments (e.g., LC, LC-MS, GC, NMR, IR spectroscopy, automatic potentiometric titrators, UV spectrophotometers), PCL ensures homogeneous materials, precisely characterized values, and COA-certified products，Purity≥99%. We offer custom synthesis services, factory-direct pricing, stable supply chains, and dedicated post-sales support.

Product Number	Product Name	CAS No.	Molecular Formula
Product Number:PCL-#-2023DD026-10mg	Product Name:Pyridoxamine-D3 dihydrochloride	CAS No.:1173023-45-4	Molecular Formula:
Product Number:PCL-#-M1039-20mg	Product Name:Methylmethylephedrone dihydrohomoisoflavone B	CAS No.:#	Molecular Formula:
Product Number:PCL-#-Ke158-100mg	Product Name:Aminobutanetriol ketoglobate impurity E	CAS No.:167105-80-8	Molecular Formula:
Product Number:PCL-#-M783-100mg	Product Name:Methylparaben; Methylparaben, hydroxyphenyl	CAS No.:99-76-3	Molecular Formula:
Product Number:PCL-#-Ce104-100mg	Product Name:ceftiofur sodium	CAS No.:104010-37-9	Molecular Formula:
Product Number:PCL-#-Bu933-100mg	Product Name:Butanone	CAS No.:78-93-3	Molecular Formula:
Product Number:70659-100mg	Product Name:propionic acid	CAS No.:79-09-4	Molecular Formula:
Product Number:PCL-#-La041-100mg	Product Name:Lansoprazole EP impurity C	CAS No.:103577-40-8	Molecular Formula:
Product Number:PCL-#-Di116-100mg	Product Name:1,1-Dichloroacetone	CAS No.:513-88-2	Molecular Formula:
Product Number:PCL-#-Et107-50mg	Product Name:monoethyl malonate	CAS No.:1071-46-1	Molecular Formula:
Product Number:PCL-#-Di105-50mg	Product Name:Diethyl malonate	CAS No.:105-53-3	Molecular Formula:
Product Number:PCL-#-Hy370-20mg	Product Name:N-methyltyramine,98%	CAS No.:370-98-9	Molecular Formula:
Product Number:PCL-2021SY226-100ml	Product Name:Aluminum nitrate test solution	CAS No.:13473-90-0	Molecular Formula:
Product Number:PCL-#-Di170-100mg	Product Name:Diclazuril	CAS No.:101831-37-2	Molecular Formula:
Product Number:PCL-#-Fu026-25mg	Product Name:4-Chloro-5-aminosulfonyl 2-[(furan-2-ylmethyl)amino]benzamide (impurity R)	CAS No.:#	Molecular Formula:
Product Number:PCL-#-De045-25mg	Product Name:Dehydroepiandrosterone	CAS No.:53-43-0	Molecular Formula:
Product Number:PCL-#-Ph050-50mg	Product Name:Yolk phosphatidylcholine	CAS No.:93685-90-6	Molecular Formula:
Product Number:PCL-#-Be220-20mg	Product Name:Isospiritin	CAS No.:89701-83-7	Molecular Formula:
Product Number:PCL-#-Et880-100mg	Product Name:Ethyl 2,4-dichloro-3-oxobutanoate	CAS No.:88-00-6	Molecular Formula:
Product Number:PCL-#-Di112-100mg	Product Name:3,5-Diaminosalicylic acid	CAS No.:112725-89-0	Molecular Formula: