Products

Reference materials from the National Institutes for Food and Drug Control (NIFDC)

1. Definition and Significance of NIFDC Reference Standards

NIFDC reference standards are specialized materials prepared, characterized, and supplied by the National Institutes for Food and Drug Control (NIFDC) under China’s State Drug Administration. As a WHO-designated Collaborating Centre for Drug Quality Assurance, NIFDC’s standards are integral to national drug regulations. They serve as authoritative benchmarks for:

Drug identification: Distinguishing genuine vs. counterfeit products.
Purity and content analysis: Quantifying active ingredients and impurities.
Instrument calibration: Validating HPLC, GC-MS, and spectrophotometer performance.

These standards align with both ChP and international pharmacopeias (USP, EP), bridging global quality requirements.

2. Categories and Sources

NIFDC reference materials cover three core domains:

Chemical drugs: e.g., impurity standards, residual solvent kits.
Biopharmaceuticals: e.g., peptide/protein reference materials.
Traditional Chinese Medicine (TCM): e.g., herbal authentication markers.

Sources:

Domestic development: Rigorously validated in NIFDC’s ISO 17025-accredited labs.
International collaboration: Cross-certified with USP, EP, and WHO standards.

3. Preparation and Characterization

NIFDC’s production follows a strict protocol:

Method design: Based on ChP, WHO guidelines, and ICH Q4B.
Material synthesis: High-purity raw materials processed via advanced chromatography (e.g., preparative HPLC).
Characterization: Multi-laboratory validation using NMR, mass spectrometry, and thermal analysis.
Stability testing: Accelerated aging studies to ensure 5-10-year shelf life.

Key metrics: Purity (≥98%), uncertainty (<0.5%), and traceability (ISO 17034).

4. Applications and Best Practices

Applications:

Pharmaceutical R&D: Impurity profiling for ANDA/NDA submissions.
GMP compliance: Batch release testing for APIs and finished products.
Regulatory audits: Supporting NMPA, FDA, and EMA inspections.

Usage guidelines:

Storage: -20°C for biologics; room temperature for chemical standards.
Calibration: Revalidate every 6 months or per method lifecycle.
Documentation: Lot-specific COA (Certificate of Analysis) available online.

Supplementary Information
For technical queries or custom reference standard requests, contact Hengyuan Fine Chemical.

Henyuan Fine Chemical is a leading Chinese supplier specializing in pharmaceutical and biological testing fields. As an authorized distributor of the PCL (Purechemland) product series, the company operates directly from manufacturers, serving pharmaceutical enterprises, research institutions, and third-party testing platforms.

Hengyuan Fine Chemical provides 3,000-4,000 types of NIFDC (National Institutes for Food and Drug Control) reference standards, covering chemical drugs, biologics, traditional Chinese medicines, and medical devices. All products are directly supplied or authorized by the China National Institutes for Food and Drug Control (NIFDC), strictly adhering to the Chinese Pharmacopoeia and international testing standards (e.g., USP, EP). The PCL series implements a full-process quality control system spanning cold-chain storage, precision packaging, and quality validation, ensuring the stability and traceability of reference materials. Additionally, the company offers customized solutions and technical consulting services to enhance clients' drug R&D efficiency, production compliance, and testing credibility, solidifying its position as a trusted industry benchmark for standardized services.

Product Number	Product Name	CAS No.	Molecular Formula
Product Number:121558	Product Name:Tanner's Peel Charcoal	CAS No.:#	Molecular Formula:
Product Number:110844	Product Name:2,3,5,4'-Tetrahydroxystilbene-2-O-beta-D glucoside	CAS No.:82373-94-2	Molecular Formula:
Product Number:140737	Product Name:5'-hydroxyindoleacetic acid	CAS No.:#	Molecular Formula:
Product Number:140736	Product Name:4'-hydroxyphenylacetic acid	CAS No.:156-38-7	Molecular Formula:
Product Number:140735	Product Name:5'-cytidylic acid	CAS No.:63-37-6	Molecular Formula:
Product Number:510105	Product Name:N2'-deacetyl-N2'-(3-mercapto-1-oxopropyl)medenosine	CAS No.:139504-50-0	Molecular Formula:
Product Number:100764	Product Name:Dipivefrine hydrochloride precursor ［(±)3,4-dihydroxy-2'-methylaminoacetophenone-3,4-dipivalate perchlorate]	CAS No.:100764-N/A	Molecular Formula:
Product Number:121610	Product Name:earth cow's knees	CAS No.:#	Molecular Formula:
Product Number:101256	Product Name:4,4'-Bis-(3-methyl-1-phenyl-5-pyrazolone) (edaravone impurity)	CAS No.:7477-67-0	Molecular Formula:
Product Number:101224	Product Name:3'-Chloro-3'-deoxythymidine (Zidovudine impurity)	CAS No.:101224-N/A	Molecular Formula:
Product Number:140815	Product Name:2',3'-Anhydroinosine	CAS No.:31766-13-9	Molecular Formula:
Product Number:140814	Product Name:2'-Deoxyinosine	CAS No.:890-38-0	Molecular Formula:
Product Number:140813	Product Name:3'-Deoxyinosine	CAS No.:13146-72-0	Molecular Formula:
Product Number:140816	Product Name:2',3'-dideoxy-2',3'-didehydroinosine	CAS No.:42867-68-5	Molecular Formula:
Product Number:121346	Product Name:Crow's gall	CAS No.:#	Molecular Formula:
Product Number:111912	Product Name:Xavier's Tapestry	CAS No.:51938-32-0	Molecular Formula:
Product Number:120933	Product Name:Buddha's hand	CAS No.:#	Molecular Formula:
Product Number:121369	Product Name:Nestle's spleen	CAS No.:#	Molecular Formula:
Product Number:121479	Product Name:Popeye's Seed	CAS No.:#	Molecular Formula:
Product Number:100552	Product Name:Olmesartan ester impurity RNH-6270 (4-(1-hydroxy-1-methylethyl)-2-propyl-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-imidazole-5-carboxylic acid)	CAS No.:100552-N/A	Molecular Formula: