Suzhou Pharmaceutical Technology Co., Ltd. (China) supplies Marbofloxacin API CAS 115550-35-1 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Marbofloxacin API — Overview
Marbofloxacin (CAS: 115550-35-1, also known as marbofloxacino, marbofloxacine, marbofloxacinum, Marbocyl active ingredient, Zeniquin active ingredient, and RO 09-1168) is a veterinary fluoroquinolone antibiotic API used in companion-animal and livestock formulation programs where local regulations permit. Suzhou Pharmaceutical Technology Co., Ltd. supplies Marbofloxacin API in bulk 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 | Marbofloxacin |
| Structural Formula |  |
| Alias | Marbofloxacino; Marbofloxacine; Marbofloxacinum; Marbocyl active ingredient; Zeniquin active ingredient; RO 09-1168 |
| CAS Number | 115550-35-1 |
| Molecular Formula | C17H19FN4O4 |
| Molecular Weight | 362.4 g/mol |
| Purity | Available by agreed HPLC specification |
| Appearance | White to light yellow crystalline powder |
| Storage | Store sealed, protected from light and moisture |
> Applications
Marbofloxacin is used by veterinary pharmaceutical manufacturers and research groups developing antibacterial products for dogs, cats, cattle, swine, and other species. API supply is intended for qualified buyers who will confirm antimicrobial-use requirements, species, indication language, dose, withdrawal periods, and finished-dose registration obligations in their own markets.
Veterinary fluoroquinolone formulation research
A comparative field trial in feline acute upper respiratory infection enrolled 103 cats and evaluated marbofloxacin against amoxycillin-clavulanic acid treatment (Journal of Small Animal Practice, 1998, PMID:9673905, n=103). This supports Marbofloxacin API relevance for veterinary antibacterial formulation research involving companion animals.
Companion-animal and livestock development
Buyers typically evaluate assay, related substances, residual solvents, water content, particle behavior, antimicrobial potency, and stability data before moving from sample quantities to pilot or commercial batches. We supply API only, not finished tablets, injectables, oral suspensions, or other veterinary drug products.
> Sourcing & Supply
Suzhou Pharmaceutical Technology Co., Ltd. is an R&D-driven pharmaceutical company with in-house synthesis and analytical capability for Marbofloxacin 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): synthesized 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 Marbofloxacin 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 Marbofloxacin 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, nitrogen-purged
- 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
Marbofloxacin API is shipped with light- and moisture-protective packaging and batch labels matched to the COA. Shipping options include express courier for sample and kilogram quantities, air freight for 1–10 kg orders, and sea freight for larger commercial shipments where timing allows.
> Pricing & Supply
Marbofloxacin 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 formulation evaluation or 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 Marbofloxacin API?
The minimum order quantity for Marbofloxacin API is 100 grams. Sample quantities of 10–50 g are available for qualified buyers before pilot or commercial orders.
What documents are included with a Marbofloxacin bulk order?
All Marbofloxacin 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 Marbofloxacin sample before placing a bulk order?
Yes. Sample quantities of 10–50 g are available for qualified buyers. Samples are normally dispatched within 7 business days of inquiry confirmation.
Do you export Marbofloxacin API to South America?
Yes. We support Marbofloxacin API inquiries from Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay.
Can buyers in Australia, New Zealand, Mexico, or Canada order Marbofloxacin?
Yes. We supply Marbofloxacin API to buyers in Australia, New Zealand, Mexico, and Canada. COA and MSDS are included with all orders.
What is Marbofloxacin used for in veterinary medicine?
Marbofloxacin is used as a veterinary fluoroquinolone active ingredient for antibacterial products where local regulations allow.
What is the mechanism of action of Marbofloxacin?
Marbofloxacin inhibits bacterial DNA gyrase and topoisomerase IV, disrupting DNA replication in susceptible bacteria.
Is Zeniquin the same as Marbofloxacin?
Zeniquin is a finished veterinary product brand whose active ingredient is marbofloxacin. We supply bulk Marbofloxacin API, not finished veterinary products.
What specification is available for Marbofloxacin CAS 115550-35-1?
Marbofloxacin is supplied by agreed HPLC specification, including assay and related-substance controls defined before order confirmation.
How is Marbofloxacin packaged and shipped internationally?
Marbofloxacin API is shipped in foil bags or foil-lined fibre drums with protection from light and moisture during international transit.
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- Doramectin | CAS 117704-25-3 — Veterinary endectocide API
> Request a Quote or Sample
To request a quote or sample for Marbofloxacin API (CAS 115550-35-1), 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 (veterinary formulation / compounding / research / other). We respond to all inquiries within 1 business day.
Last reviewed: June 2026