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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-#-Hy394-100mg	Product Name:2-Amino-5-hydroxybenzoic acid	CAS No.:394-31-0	Molecular Formula:
Product Number:PCL-#-Am990-100mg	Product Name:m-Aminobenzoic acid	CAS No.:99-05-8	Molecular Formula:
Product Number:PCL-#-Am237-100mg	Product Name:4-Amino-3-hydroxybenzoic acid	CAS No.:2374-03-0	Molecular Formula:
Product Number:PCL-#-Am157-100mg	Product Name:3-Amino-4-hydroxybenzoic acid	CAS No.:1571-72-8	Molecular Formula:
Product Number:PCL-#-Lu583-100mg	Product Name:2,3-Dimethylpyridine	CAS No.:583-61-9	Molecular Formula:
Product Number:PCL-#-Ar489-25mg	Product Name:(+)-Orangene	CAS No.:489-39-4	Molecular Formula:
Product Number:PCL-#-Co218-100mg	Product Name:Cocaldehyde	CAS No.:21834-92-4	Molecular Formula:
Product Number:PCL-#-Et133-100mg	Product Name:2-ethyl-5-methylpyrazine	CAS No.:13360-64-0	Molecular Formula:
Product Number:PCL-#-Sc007-5mg	Product Name:Dehydrated scopolamine	CAS No.:535-26-2	Molecular Formula:
Product Number:PCL-#-C731-20mg	Product Name:Kaempferol chemical reference material	CAS No.:499-75-2	Molecular Formula:
Product Number:PCL-#-Tr030-20mg	Product Name:Tribulus terrestris sapogenins.	CAS No.:6875-60-1	Molecular Formula:
Product Number:PCL-#-Cy581-25mg	Product Name:Chuanxianosaponin B,	CAS No.:51161-58-1	Molecular Formula:
Product Number:PCL-#-Oc479-50mg	Product Name:Ochratoxin A	CAS No.:303-47-9	Molecular Formula:
Product Number:PCL-#-Me723-50mg	Product Name:Metoclopramide hydrochloride	CAS No.:7232-21-5	Molecular Formula:
Product Number:PCL-#-Dg081-1g	Product Name:D-Glucose Anhydrous,≥95% chemical analysis standard	CAS No.:50-99-7	Molecular Formula:
Product Number:PCL-#-Am122-100mg	Product Name:Glycine, ≥95% chemical analysis standard	CAS No.:56-40-6	Molecular Formula:
Product Number:PCL-#-Fe006-10mg	Product Name:6'-0-( trans-feruloyl]-flowering presenilins	CAS No.:131623-14-8	Molecular Formula:
Product Number:PCL-#-So763-50mg	Product Name:Sodium nitrite	CAS No.:7632-00-0	Molecular Formula:
Product Number:PCL-#-Di189-100mg	Product Name:2,2-Biphenyl-1-picrylhydrazyl	CAS No.:1898-66-4	Molecular Formula:
Product Number:PCL-#-Ep010-100mg	Product Name:Ipratropium (acetamidoabietin)	CAS No.:123997-26-2	Molecular Formula: