Suzhou Pharmaceutical Technology Co., Ltd. (China) supplies Chlorambucil API CAS 305-03-3 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Chlorambucil API — Overview
Chlorambucil (CAS: 305-03-3, also known as clorambucilo, nitrogen mustard derivative, alkylating cytotoxic API, specialty oncology API, and aromatic nitrogen mustard API) is an alkylating cytotoxic API used in formulation, analytical-development, and research programs where local regulations permit. Suzhou Pharmaceutical Technology Co., Ltd. supplies Chlorambucil API in controlled small-batch and bulk quantities from Suzhou, China, with export to South America, Australia, New Zealand, Mexico, Canada, and worldwide markets. Export documentation: COA and MSDS standard for all orders.
| Product Name | Chlorambucil |
| Structural Formula |  |
| Alias | Clorambucilo; nitrogen mustard derivative; alkylating cytotoxic API; specialty oncology API; aromatic nitrogen mustard API |
| CAS Number | 305-03-3 |
| Molecular Formula | C14H19Cl2NO2 |
| Molecular Weight | 304.2 g/mol |
| Purity | Available by agreed HPLC specification |
| Appearance | White to off-white crystalline powder |
| Storage | Store sealed, protected from moisture and strong light |
> Applications
Chlorambucil is used by pharmaceutical and research organizations developing cytotoxic antineoplastic formulations, reference methods, and impurity-control strategies. API supply is intended for qualified buyers who will confirm dosage form, cytotoxic handling and impurity-control strategy, impurity requirements, pharmacopoeial approach, and finished-dose registration obligations in their own markets.
Cytotoxic specialty API formulation research
A 1989 New England Journal of Medicine journal article reported a randomized trial that included a chlorambucil-containing regimen in controlled clinical research (N Engl J Med, doi:10.1056/NEJM198901053200102, n=81). This supports the need for carefully controlled Chlorambucil API quality in alkylating cytotoxic formulation and analytical-development programs.
Analytical and impurity-control development
Buyers typically evaluate assay, related substances, residual solvents, water content, identity, cytotoxic impurity profile, stability behavior, and handling controls before moving from sample quantities to pilot or commercial batches. We supply API only, not finished tablets, capsules, oral liquids, compounded products, or branded medicines.
> Sourcing & Supply
Suzhou Pharmaceutical Technology Co., Ltd. is an R&D-driven pharmaceutical company with in-house synthesis and analytical capability for Chlorambucil API. Small batches (up to 10 kg) are produced directly by our technical team in Suzhou. For larger commercial quantities, production is scaled up at qualified manufacturing facilities, with export documentation provided according to the order scope.
- Small-batch orders (≤10 kg): prepared by our technical team in Suzhou. Lead time 10–14 business days from order confirmation.
- Commercial bulk (>10 kg): scaled up at qualified manufacturing facilities. Lead time 14–21 business days depending on batch size and documentation.
We export Chlorambucil API to buyers across South America — including Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay — as well as to Australia, New Zealand, Mexico, and Canada. Inquiries from European, Middle Eastern, and Asian markets are also welcome.
> Quality & Export Documentation
All Chlorambucil shipments are accompanied by a Certificate of Analysis (COA) confirming identity, appearance, assay, and related substances against batch specification. Purity is tested by HPLC against an authenticated reference standard. MSDS is provided for all orders, and Certificate of Origin (COO) is available for commercial bulk shipments.
| Order size | Documentation included |
| ≤10 kg (small-batch / research) | COA + MSDS |
| >10 kg (commercial bulk) | COA + MSDS + COO |
> Packaging & Logistics
- 100 g, 500 g: double-layered aluminium foil bag, heat-sealed
- 1 kg: aluminium foil bag inside kraft paper box
- 5 kg, 10 kg: aluminium foil bag inside fibre drum
- >10 kg: packaging agreed according to commercial order requirements
Chlorambucil API is shipped with moisture-protective packaging and batch labels matched to the COA. Shipping options include express courier for samples, air freight for kilogram orders, and sea freight for larger commercial shipments where timing allows.
> Pricing & Supply
Chlorambucil pricing is provided on request. We do not publish list prices because the final quote depends on order quantity, purity requirement, documentation needs, shipping destination, and current raw material costs.
- MOQ: 100 g for qualified buyers
- Sample policy: 10–50 g samples available for analytical confirmation
- Bulk discount tiers apply at 500 g, 1 kg, 5 kg, and 10 kg
- Payment: T/T (bank transfer). 100% in advance for standard orders. Terms for larger repeat orders by arrangement.
> Frequently Asked Questions
What is the minimum order quantity for Chlorambucil API?
The minimum order quantity for Chlorambucil API is 100 grams. Sample quantities of 10–50 g are available for qualified buyers.
What documents are included with a Chlorambucil bulk order?
All Chlorambucil orders include a COA and MSDS in English. For commercial bulk orders above 10 kg, COO is available as standard export documentation.
Can I request a Chlorambucil sample before placing a bulk order?
Yes. Sample quantities of 10–50 g are available for qualified buyers before pilot or commercial orders.
Do you export Chlorambucil API to South America?
Yes. We support inquiries from Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay.
Can buyers in Australia, New Zealand, Mexico, or Canada order Chlorambucil?
Yes. We supply Chlorambucil API to buyers in Australia, New Zealand, Mexico, and Canada. COA and MSDS are included with all orders.
What is Chlorambucil used for?
Chlorambucil is an alkylating cytotoxic API used in formulation, analytical-development, and research programs where local regulations allow.
Is Chlorambucil equivalent to other nitrogen mustard alkylating agents?
Yes. Chlorambucil is commonly classified as an aromatic nitrogen mustard derivative; we supply API, not branded finished medicine.
What specification is available for Chlorambucil CAS 305-03-3?
Chlorambucil is supplied by agreed HPLC specification, including assay, related substances, residual solvents, water content, identity, cytotoxic impurity profile, and stability behavior when required.
How is Chlorambucil packaged and shipped internationally?
Chlorambucil API is shipped in foil bags or foil-lined fibre drums with protection from moisture and strong light during international transit.
Do you supply finished Chlorambucil tablets or capsules?
No. We supply Chlorambucil API, not finished tablets, capsules, oral liquids, compounded products, or branded medicines.
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- Prostaglandin E1 (Alprostadil) | CAS 745-65-3 — specialty API
> Request a Quote or Sample
To request a quote or sample for Chlorambucil API (CAS 305-03-3), please contact us directly at Info@fmyykj.com.
Include in your inquiry: required quantity (grams or kg), destination country, documentation requirements (COA + MSDS standard; COO for bulk), and intended use (formulation / analytical development / research / other). We respond to all inquiries within 1 business day.
Last reviewed: June 2026