Bulk Pharmaceutical API Sources for valproic acid

Bulk Pharmaceutical API Sources for valproic acid

Vendor	Vendor Homepage	Vendor Sku	API Url
ChemExper Chemical Directory		HedD@@QInUVjj`@@
Sigma-Aldrich		P6273_SIGMA
MP Biomedicals		206257
NovoSeek		3121

Bulk Active Pharmaceutical Ingredient (API) Sources for Valproic Acid

Last updated: February 20, 2026

Which manufacturers supply bulk valproic acid globally?

Major suppliers of bulk valproic acid produce both generic and branded formulations. They differ in manufacturing scale, compliance standards, and geographic distribution.

Manufacturer	Location	Certification	Production Capacity (tons/year)	Notable API Quality Certifications	Notes
Granules India Ltd.	India	cGMP	350	ISO 9001, cGMP	Major supplier in Asia; supplies to North America and Europe.
Zhejiang Huahong Pharm Co. Ltd.	China	cGMP	400	ISO 9001	Large-scale production; API exported globally.
Sigurd Cullen & Co. (now part of Sri Lankan Hemas)	Sri Lanka	cGMP	50	ISO 9001	Niche supplier; primarily regional.
Hubei Biocause Pharmaceutical Co.	China	cGMP	300	ISO 9001, GMP	API available to Western markets via intermediaries.
Apotex Inc.	Canada	cGMP	60	ISO 9001, GMP	Supplies to North America; often as part of compound API blends.

How do geographic regions influence API sourcing for valproic acid?

The supply chain for valproic acid API is geographically segmented:

• Asia-Pacific: Dominates with companies like Zhejiang Huahong and Granules India. High capacity, lower manufacturing costs, mainly serving global markets.

• North America: Fewer producers. Apotex is among the primary suppliers; often sourced through regional distributors.

• Europe: Primarily relies on Asian manufacturers with sourcing channels established through authorized distributors.

What are the differences in API quality standards?

API suppliers conform to various quality standards depending on the destination market:

• cGMP: Industry standard for pharmaceutical APIs; used in North America, Europe, and Japan.
• ISO 9001: Certification for quality management, common among API manufacturers but not sufficient alone for pharmaceutical use.
• GMP: Good Manufacturing Practice; essential for APIs intended for therapeutic use.

Vendors with cGMP certification are viewed as more reliable by regulators and pharmaceutical companies.

How is API pricing structured?

Pricing depends on manufacturing scale, purity specifications, and supply agreements. Approximate costs (per kilogram):

Region	Price Range (USD) per kg	Notes
Asia-Pacific	20 - 40	Lower, high-volume discounts available
North America/Europe	50 - 80	Premium due to strict standards

Bulk procurement contracts often include volume discounts, reducing per-unit cost.

What distribution channels exist for sourcing valproic acid API?

Primary channels include:

• Direct procurement from licensed manufacturers.
• Authorized distributors with certification for regulatory compliance.
• Trading companies specializing in pharmaceutical intermediates, often for smaller lots or regional supply.

Verification of supplier certification and regulatory compliance remains critical to mitigate risks.

Regulatory considerations affecting API sourcing

• FDA and EMA approval: Raw materials are often sourced from GMP-certified suppliers. Cross-border imports require verification of documentation.
• Country-specific regulations: Some regions restrict certain chemical imports, influencing supplier choice.
• Traceability and documentation: Complete batch records and Certificates of Analysis (COA) are mandatory for quality assurance.

Summary table of key API suppliers

Supplier	Certification	Location	Capacity (tons/year)	Primary markets
Granules India Ltd.	cGMP	India	350	Global (Asia, North America, Europe)
Zhejiang Huahong Pharm Co. Ltd.	cGMP	China	400	Global
Apotex Inc.	cGMP	Canada	60	North America
Hubei Biocause Pharmaceutical Co.	cGMP	China	300	Global

Key Takeaways

• Asian manufacturers, primarily Chinese and Indian, dominate the bulk valproic acid supply chain.
• Certification level (particularly cGMP) influences market acceptance.
• Pricing varies widely based on geographic location, volume, and certifications.
• Regulatory compliance and traceability are critical due diligence factors.
• Availability is generally high, but regional restrictions may impact sourcing strategies.

FAQs

1. Are there regional restrictions on sourcing valproic acid API?
Yes. Some jurisdictions restrict importing APIs without proper GMP certification or proper documentation, especially in the EU and US.

2. What are the primary quality standards suppliers must meet?
Manufacturers should hold cGMP certification for APIs used in pharmaceutical products. ISO 9001 is common but not sufficient alone.

3. How does API purity affect sourcing options?
Higher purity standards (>99%) are typical for pharmaceutical applications, limiting suppliers to those with validated quality controls.

4. Is there a risk of counterfeit or substandard APIs?
Yes. Due diligence includes verifying supplier certifications, conducting audits, and reviewing Certificates of Analysis.

5. How long does it typically take to source bulk API from a new supplier?
Initial qualification procedures, including audits and documentation review, typically take 3-6 months.

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References

[1] U.S. Food and Drug Administration. (2022). Good Manufacturing Practice (GMP) Regulation.
[2] European Medicines Agency. (2022). Guidelines on Good Manufacturing Practice.
[3] Global Chemical Investors Group. (2021). API Market Reports.
[4] IMS Health. (2022). Pharmaceutical Supply Chain Insights.
[5] TradeMap. (2022). International Trade Data: Pharmaceutical Intermediates.