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Marbofloxacin has good antibacterial activity against both gram-negative bacteria and gram-positive bacteria.
Marbofloxacin (CAS 115550-35-1, C₁₇H₁₉FN₄O₄, MW 362.36) is a third-generation synthetic fluoroquinolone antibiotic developed exclusively for veterinary use. It kills bacteria by inhibiting DNA gyrase and topoisomerase IV. Available as API/bulk grade (typically ≥98.5–99% by HPLC), research grade (>98%), and analytical reference standards.
Uses: Finished medicines for dogs/cats (skin, urinary, respiratory infections), cattle/pigs (respiratory disease, enteric infections, mastitis, MMA syndrome), poultry (E. coli/Mycoplasma); plus in-vitro MIC studies, PK/PD research, and residue-analysis standards for meat/milk testing.
Selling points: Broad spectrum including Mycoplasma, with very low MICs against bovine respiratory pathogens; concentration-dependent killing; high oral bioavailability, low protein binding, wide tissue distribution, long half-life → once-daily dosing; short withdrawal periods in food animals; animal-only API avoids human-drug quotas; mature scalable synthesis with global suppliers offering COA/MSDS/DMF support.
Caveats: prescription-only, not for human use; avoid in young/growing animals; check local regulations on fluoroquinolones in food species.
Items | Specifications | Results |
Appearance | Light yellow,crystalline powder | Conformed |
Solubility | Slightly soluble in water ,sparingly soluble or slightly soluble in methylene chloride,very slightly soluble in ethanol(96 per cent) | Complies |
Identification | (A) IR:Conforms to the marbofloxacin CRS (B) Absorbance:Maximum 0.20,determined at 450nm | Complies 0.16 |
Related substances | Impurity E ≤0.20% Unspecified impurity ≤0.20% Total impurities ≤0.5% | Not detected 0.16% 0.30% |
Loss on drying | Maximum 0.5 per cent | 0.1% |
Sulfated ash | Maximum 0.1 per cent | 0.06% |
Assay | 99.0%~101.0%(dried substance) | 99.6% |
Microbial limit | TAMC Not more than 1000cfu/g TYMC Not more than 100cfu/g Escherichia coli:Absence of Escherichia coli of 1g test sample. | 20cfu/g 4cfu/g Not detected |
Bacterial endotoxins | Not more than 0.3EU/g | <0.3EU/g |
Conclusion | The product conforms to the above specifications. | |

| Product parameters | |
| Cas number: | 115550-35-1 |
| Appearance: | light yellow powder |
| Purity: | 99.0%~101% |
| Package details: | 1kg/foil bag,25kg/drum |
| Brand: | Fortunachem |
Uses:
IUPAC: 9-fluoro-2,3-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-7H-pyrido[3,2,1-ij][4,1,2]benzoxadiazine-6-carboxylic acid
Formula / MW: C₁₇H₁₉FN₄O₄ / 362.36
Appearance: white to pale yellow crystalline powder; mp ~268–269 °C (dec.); slightly soluble in water, sparingly soluble in DMSO/ethanol
Mechanism: bactericidal inhibition of bacterial DNA gyrase (topoisomerase II) and topoisomerase IV
"Chemical grade" in practice: sold as veterinary API/API-grade bulk (typically ≥98.5–99% by HPLC, with limits on loss on drying, residue on ignition, heavy metals, total/individual impurities; EP/BP-monographed in some markets), research grade (>98%, RUO), and analytical reference standard (e.g., 100–1000 ppm solutions). HS code 2934.99.
Dogs & cats: skin & soft-tissue infections, urinary tract infections, respiratory infections (tablets, injectables, otic combos with clotrimazole/dexamethasone).
Cattle & pigs: respiratory disease (Pasteurella multocida, Mannheimia haemolytica, Histophilus somni), digestive/enteric infections, mastitis, and porcine MMA syndrome (mastitis–metritis–agalactia).
Poultry: E. coli and Mycoplasma infections/mixed infections (via drinking water).
Also used in leishmaniasis research models.
In vitro antimicrobial & MIC studies, PK/PD modeling, mycoplasmacidal assays.
Analytical reference for residue testing in meat/milk (MRL monitoring) and HPLC/LC-MS method development.
Topoisomerase/DNA-gyrase inhibitor tool compound.
Broad spectrum covering Gram-negative, Gram-positive and Mycoplasma; retains activity against strains resistant to macrolides, lincosamides, chloramphenicol, tetracyclines and sulfonamides.
Very low MICs against key bovine respiratory pathogens (e.g., P. multocida MIC₉₀ ~0.02 µg/mL); concentration-dependent killing with favorable Cmax/MIC and AUC₂₄/MIC indices.
High oral bioavailability (~80% in dogs/sows, near 100% in calves), low plasma protein binding (<10%), wide tissue distribution (lung, skin, kidney, mammary gland), and long half-life (dogs ~9–14 h, cats ~10–17 h) → true once-daily dosing and good owner compliance.
Animal-only drug: no competition with human-API quotas; fits the growing companion-animal and livestock health markets.
Short withdrawal periods in food animals (cattle ~6 days, milk discard ~1.5 days; pigs ~2 days) — a strong selling point for herd-health products.
Mature, scalable synthesis with multiple global suppliers; available from 1 g (research) to 25 kg drums (GMP/API), with COA, HPLC chromatograms, MSDS and DMF/CEP support where applicable.
Stable crystalline solid, amenable to tablets, oral suspensions, injectables and water-soluble premixes.
Prescription-only veterinary medicine; strictly not for human use. Many suppliers label research packs "RUO / not for clinical use."
Contraindicated in young/growing animals (cartilage effects) and animals with seizure history; avoid co-administration with Al/Ca/Mg/Fe/Zn cations and theophylline.
Quinolone resistance and residue issues are scrutinized; supply should meet pharmacopeial impurity profiles and support MRL-compliance documentation. Regulations on fluoroquinolone use in food-producing species vary by country—confirm local approval status before promoting livestock claims.






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FAQ From Wuhan Fortuna Chemical Co.,Ltd
Q1: Can I get a sample for free ?
A: For small QTY and low value product, we can provide sample for free exclude shipping cost. For high value sample, we will charge the basic sample cost, but we can refund all the cost if customers place order after sample test.
Q2: How to confirm the product quality before placing orders ?
A: Most of our products confirm to international standards like USP/EP/BP/JP/CP. We will provide COA/TDS/MSDS for customers to confirm the specification before placing order.
Q3: What is the payment you accept?
A: For small and low value order, we accept CreditCard, MaterCard,VISA,Western Union and T/T.For large order, we can do T/T and L/C. Any pay on delivery or pay-after are not available for us.
Q4: What is your shipment way ?
A: For less than 100kg gross weight order will ship with courier like FedEx or UPS, we support customers to place courier orders remotely by their account, we will package the goods well and wait for pick up.For more than 100kg goods, we will transport by Air or Sea according to customers' requirement.
Q5: How long is your after-sales service?
A: We accept customer’s quality complaint in three month after customer received the goods. We provide tech.support for all-life if customer place order from our company.
Q6: How do you treat quality complaint ?
A: We support customer to provide our products to any rightful third party testing organization to test our products according to the COA specification, if the test result is confirm with COA, we will take all the loss for customers.



Name:Wuhan Fortuna Chemical Co.,Ltd
Category:Others
Trade Category: Trading Company
Employees: 11 - 50 People
Address: Room 2015, No.2 Building, Kaixin Mansion No.107
Company Information: Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients' requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward power, their satisfaction is our struggling goal.
Wuhan Fortuna Chemical Co.,Ltd is a professional manufacturer which provide Marbofloxacin with good quality and best price, welcome to contact us to get COA/TDS/MSDS of Marbofloxacin.
1. Guaranteed purity;
2. Large quantity in stock;
3. Largest manufacturer;
4. Best service after shipment with email;
5. High quality & competitive price;

It is non-dangerous goods.

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