Products

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-#-Or167-100mg	Product Name:1-(3-chloro-2-hydroxypropyl)-2-methyl-5-nitroimidazole	CAS No.:16773-42-5	Molecular Formula:
Product Number:PCL-#-At191-100mg	Product Name:6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine	CAS No.:1912-24-9	Molecular Formula:
Product Number:PCL-#-Fl190-100mg	Product Name:2-fluoro-5-methylphenyl isocyanate	CAS No.:190774-50-6	Molecular Formula:
Product Number:PCL-#-Di999-25mg	Product Name:NN dimethyl-p-phenylenediamine	CAS No.:99-98-9	Molecular Formula:
Product Number:PCL-#-My128-100mg	Product Name:Matexolide	CAS No.:N/A	Molecular Formula:
Product Number:PCL-#-Ch801-100mg	Product Name:chlorpromazine-oxalate	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024SW507-1ml	Product Name:Water quality Acetone in lecithin	CAS No.:N/A	Molecular Formula:
Product Number:PCL-#-Me110-100mg	Product Name:ethylene glycol methyl ether acetate	CAS No.:110-49-6	Molecular Formula:
Product Number:PCL-#-Di101-100mg	Product Name:Dicyclohexylamine (DCHA), 99%	CAS No.:101-83-7	Molecular Formula:
Product Number:PCL-#-Ph643-100mg	Product Name:phthalaldehyde	CAS No.:643-79-8	Molecular Formula:
Product Number:PCL-#-Ch802-100mg	Product Name:Phenazopyridine maleate	CAS No.:N/A	Molecular Formula:
Product Number:PCL-#-Hy581-100mg	Product Name:3-Hydroxy-4-iodobenzoic acid	CAS No.:58123-77-6	Molecular Formula:
Product Number:PCL-#-Me182-100mg	Product Name:methoxytrimethylsilane	CAS No.:1825-61-2	Molecular Formula:
Product Number:PCL-#-Na146-100mg	Product Name:N-(1-Naphthyl)ethylenediamine hydrochloride	CAS No.:1465-25-4	Molecular Formula:
Product Number:PCL-#-Cr748-100mg	Product Name:Cross-linked sodium carboxymethyl cellulose	CAS No.:74811-65-7	Molecular Formula:
Product Number:PCL-#-Br138-100mg	Product Name:Brinzolamide	CAS No.:N/A	Molecular Formula:
Product Number:PCL-#-Th147-100mg	Product Name:thiosalicylic acid	CAS No.:147-93-3	Molecular Formula:
Product Number:PCL-#-Be166-100mg	Product Name:benzofuran-4-carboxylic acid	CAS No.:166599-84-4	Molecular Formula:
Product Number:PCL-#-Tr613-100mg	Product Name:Sodium citrate dihydrate	CAS No.:6132-04-3	Molecular Formula:
Product Number:PCL-#-Na135-100mg	Product Name:beta-naphthol	CAS No.:135-19-3	Molecular Formula: