Suzhou Pharmaceutical Technology Co., Ltd. (China) supplies Clindamycin HCl API CAS 21462-39-5 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Clindamycin HCl API — Overview
Clindamycin HCl (CAS: 21462-39-5, also known as clindamycin hydrochloride, clindamicina HCl, Dalacin active ingredient, Cleocin active ingredient, and clindamycin HCl monohydrochloride) is a lincosamide antibacterial API used in formulation, analytical-development, and research programs where local regulations permit. Suzhou Pharmaceutical Technology Co., Ltd. supplies Clindamycin HCl 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 | Clindamycin HCl |
| Structural Formula |  |
| Alias | Clindamycin hydrochloride; Clindamicina HCl; Dalacin active ingredient; Cleocin active ingredient; Clindamycin HCl monohydrochloride |
| CAS Number | 21462-39-5 |
| Molecular Formula | C18H34Cl2N2O5S |
| Molecular Weight | 461.4 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
Clindamycin HCl is used by pharmaceutical and research organizations developing antibacterial formulations, reference methods, and impurity-control strategies. API supply is intended for qualified buyers who will confirm dosage form, microbiological control strategy, impurity requirements, pharmacopoeial approach, and finished-dose registration obligations in their own markets.
Antibacterial formulation research
A 2005 Journal of Clinical Microbiology article reported a randomized study comparing topical clindamycin and metronidazole microbiologic response in bacterial-vaginosis research (J Clin Microbiol, doi:10.1128/JCM.43.9.4492-4497.2005, n=119). This supports the need for carefully controlled Clindamycin HCl API quality in antibacterial formulation and analytical-development programs.
Analytical and impurity-control development
Buyers typically evaluate assay, related substances, residual solvents, water content, identity, salt-form controls, microbial limits, and stability behavior before moving from sample quantities to pilot or commercial batches. We supply API only, not finished capsules, injections, topical gels, oral solutions, 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 Clindamycin HCl 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 Clindamycin HCl 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 Clindamycin HCl 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
Clindamycin HCl 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
Clindamycin HCl 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 Clindamycin HCl API?
The minimum order quantity for Clindamycin HCl API is 100 grams. Sample quantities of 10–50 g are available for qualified buyers.
What documents are included with a Clindamycin HCl bulk order?
All Clindamycin HCl 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 Clindamycin HCl 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 Clindamycin HCl 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 Clindamicina HCl?
Yes. We supply Clindamycin HCl API to buyers in Australia, New Zealand, Mexico, and Canada. COA and MSDS are included with all orders.
What is Clindamycin HCl used for?
Clindamycin HCl is a lincosamide antibacterial API used in formulation, analytical-development, and research programs where local regulations allow.
Is Cleocin active ingredient the same as Clindamycin HCl?
Yes. Cleocin active ingredient is a commercial-context synonym for Clindamycin HCl; we supply API, not branded finished medicine.
What specification is available for Clindamycin HCl CAS 21462-39-5?
Clindamycin HCl is supplied by agreed HPLC specification, including assay, related substances, residual solvents, water content, identity, salt-form controls, and microbial limits when required.
How is Clindamycin HCl packaged and shipped internationally?
Clindamycin HCl 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 Clindamycin capsules, injections, or gels?
No. We supply Clindamycin HCl API, not finished capsules, injections, topical gels, oral solutions, compounded products, or branded medicines.
> Related Products
- Clarithromycin | CAS 81103-11-9 — macrolide API
- Chloramphenicol | CAS 56-75-7 — antibacterial API
- Marbofloxacin | CAS 115550-35-1 — veterinary antibacterial API
- Clomipramine | CAS 303-49-1 — neurological API
> Request a Quote or Sample
To request a quote or sample for Clindamycin HCl API (CAS 21462-39-5), 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