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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:171258	Product Name:■Zolpidem tartrate	CAS No.:99294-93-6	Molecular Formula:
Product Number:101397	Product Name:2,3-Diazanaphthalene (hydralazine hydrochloride impurity)	CAS No.:101397-N/A	Molecular Formula:
Product Number:100066	Product Name:Diphenhydramine hydrochloride	CAS No.:147-24-0	Molecular Formula:
Product Number:100065	Product Name:Amiodarone hydrochloride	CAS No.:100065-N/A	Molecular Formula:
Product Number:100063	Product Name:Estradiol valerate	CAS No.:100063-N/A	Molecular Formula:
Product Number:101391	Product Name:Calcium edetate sodium [calcium disodium ethylenediaminetetraacetate hydrate]	CAS No.:101391-N/A	Molecular Formula:
Product Number:100060	Product Name:phthalidinium	CAS No.:100060-N/A	Molecular Formula:
Product Number:101390	Product Name:Iopachol impurity B (5-[(hydroxyacetyl)amino]-N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-2,4,6-triiodobenzene-1,3-dicarboxamide)	CAS No.:101390-N/A	Molecular Formula:
Product Number:101339	Product Name:Piperaquine phosphate impurityⅠ[7-chloro-4-(1-piperazinyl)quinoline]	CAS No.:101339-N/A	Molecular Formula:
Product Number:100008	Product Name:Testosterone propionate	CAS No.:57-85-2	Molecular Formula:
Product Number:101338	Product Name:Primaquine phosphate impurity I (8-[(4-aminopentyl)amino]-6-methoxyquinoline)	CAS No.:101338-N/A	Molecular Formula:
Product Number:100007	Product Name:Bendroflumethiazide	CAS No.:73-48-3	Molecular Formula:
Product Number:101337	Product Name:primaquine phosphate	CAS No.:101337-N/A	Molecular Formula:
Product Number:100006	Product Name:Estradiol benzoate	CAS No.:50-50-0	Molecular Formula:
Product Number:101336	Product Name:Nevirapine impurity III 4-methyl-11-propyl-5,11-dihydro-6-hydroxy-bipyrido[3,2-b: 2',3'-e][1,4]diazepin-6-one)	CAS No.:101336-N/A	Molecular Formula:
Product Number:100005	Product Name:Nitrogen mustard phenylbutyrate	CAS No.:305-03-3	Molecular Formula:
Product Number:101335	Product Name:Nevirapine Impurity II (11-ethyl-4-methyl-5,11-dihydro-6-hydroxy-bis-pyrido[3,2-b: 2',3'-e][1,4]diazepin-6-one)	CAS No.:101335-N/A	Molecular Formula:
Product Number:100004	Product Name:Nandrolone phenylpropionate	CAS No.:62-90-8	Molecular Formula:
Product Number:101334	Product Name:Nevirapine impurity I (4-methyl-5,11-dihydro-6-hydroxy-bipyrido[3,2-b: 2',3'-e][1,4]diazepin-6-one)	CAS No.:101334-N/A	Molecular Formula:
Product Number:100003	Product Name:(+) 2-aminobutanol	CAS No.:100003-N/A	Molecular Formula: