Basic Information of Fluralaner
- Product Name: Fluralaner
- Trade Name: Bravecto
- CAS No.: 864731-61-3
- Molecular Formula: C22H17Cl2F6N3O3
- Molecular Weight: 556.285
- EINECS No.: 689-035-6
- Chemical Class: Isoxazoline small molecule
- Product Use: Used as an intermediate for veterinary pharmaceuticals
What is Fluralaner?
Fluralaner is an isoxazoline insecticide.It is highly effective in eradicating fleas, ticks, and mites.
As a systemic veterinary medication, it can be administered orally or applied topically.When it is ingested by animals (cats, dogs, chickens, etc.).The drug will circulate throughout the body via the bloodstream.Upon being bitten by parasites, they ingest a lethal dose of medication, requiring no direct contact.
Buy Fluralaner API, Highassay is a good choice.

Why choose Highassay?
Highassay is a supplier of Fluralaner API based in China.
- Non-Infringing Racemate — Your Legal Safeguard
The preparation process, crystalline form, pharmaceutical uses, and formulations of high-purity, single S-fluralaner are already subject to patent protection and entail high costs.We provide racemic Fluorellana API with an S:R ratio of 1:1.It involves absolutely no infringement issues; you can purchase with confidence and use it with peace of mind.
- Pharmaceutical-Grade High Purity — Your Confident Choice for Quality
We provide you with a purity of ≥98% (determined by HPLC).And each batch of product is accompanied by a COA, MSDS, TDS, and Impurity Summary Report.It not only ensures product stability across batches but also relieves you of the need to perform impurity identification.
- Worry-Free Capacity — Your Supply Chain Guarantee
We master mature synthesis processes that enable us to guarantee supply capabilities and competitive pricing advantages.
Fluralaner bulk powder,find Highassay.
Click below to contact us for free samples and the latest quotation for Fluralaner. We look forward to receiving your inquiry.
Physicochemical Properties of Fluralaner
- Appearance: White to off-white crystalline powder
- Melting Point: 173.3–175.5°C
- Flash Point: 236°C
- Vapor Pressure: <1.0 × 10⁻⁵ Pa (20°C)
- log P: 4.5–5.4(Highly Lipophilic)
- log Koc: 4.1
- BCF: 79.4 L/kg (Zebrafish)
- Water Solubility: 0.082–0.1 mg/L (Very slightly soluble)
- DMSO: ≥100 mg/mL (Very soluble)
- Solubility: Soluble in toluene, acetone, acetonitrile, and methanol; slightly soluble in n-hexane


Fluralaner 's Packaging
We offer various of specifications and packaging options, and can also provide customized services tailored to your specific requirements.
- Milligram Scale: We provide amber glass vials for packaging, suitable for laboratory use.
- Gram to 1-Kilogram Scale: We provide amber, light-blocking pharmaceutical-grade PE plastic bottles for R&D and experimental use.
- 1 kg and Above: Packaged in pharmaceutical-grade HDPE containers; suitable for commercial specifications.
In addition to the aforementioned inner packaging, we also provide moisture-proof inner bags, inert gas protection, and thickened protective outer cartons.
Fluralaner API provides end-to-end cold chain delivery services to ensure the preservation of its pharmaceutical activity.
Quality Standards for Fluralaner API
The specifications for Highassay’s Fluralaner API all meet or exceed industry standards.
- Specifications of Fluralaner API
| Test Item | Specification Limit | Description |
| Assay | ≥ 98.0% | Complies |
| Water Content | ≤ 0.5% | Complies |
| Residue on Ignition | ≤ 0.1% | Complies |
| Heavy Metals | ≤ 20 ppm | Complies |
| Known Impurities A/B/C/D | Individual ≤ 0.50% | Complies |
| Total Impurities | ≤ 2.0% | Complies |
| ICH Residual Solvents | All items below specified limits | Complies |
Flurelana is a highly effective and long-lasting insecticide.The duration of action following a single dose can last up to 12 weeks.And has no cross-resistance with abamectin or fipronil.
Due to its high pharmacological activity, Fluralaner requires precise dosing based on the dog’s body weight to ensure safety.
For example: 2.0–4.5 kg, take 112.5 mg; 4.5–10 kg, take 250 mg; 10–20 kg, take 500 mg; 20–40 kg, take 1000 mg; 40–56 kg, take 1400 mg.
Dogs weighing over 56 kg require administration via a combination of tablets.
Fluralaner and Afoxolaner both belong to the isoxazoline class of systemic antiparasitics.They can kill fleas, ticks, and mites.Fluralaner provides efficacy for up to 12 weeks, while Afoxolaner remains effective for 4 weeks.
Fipronil is a phenylpyrazole topical medication.It acts solely on the skin’s surface and cannot kill mites.Its efficacy is short-lived, and it is highly toxic to cats.
By blocking the GABA and glutamate-gated chloride channels of arthropods (such as fleas, ticks, and mites).A dual action causes parasites’ nervous systems to malfunction, leading to death.
Fluralaner is virtually non-toxic to cats, dogs, poultry, and mammals; highly safe.
Small Batches: In-stock and shipped immediately.
Medium-batch orders: Shipment arranged within one week.
For large-volume orders: We offer expedited services. Please contact me to discuss your specific requirements, and I will formulate the optimal solution for you.
We have no minimum order quantity requirements; we can supply exactly however much you need.However, Fluralaner API price is directly related to your purchase volume.If you have any other questions, please contact our customer service team, and we will be happy to assist you.
Fluralaner API Storage Recommendations
| Storage State | Storage Temperature | Shelf Life |
| Powder | 2~8℃ (Refrigerated) | Short-term storage |
| Powder | -20℃ (Frozen) | Long-term storage (>2 years) |
| Solution | -80℃ | 6 months |
| Solution | -20℃ | 1 month |
Note: Store in a sealed, moisture-proof container, protected from light. Shelf life is approximately 24 months. Avoid repeated freeze-thaw cycles.
Where can Fluralaner be used?
Fluralaner for Pets:As a dewormer for cats and dogs,primarily used for the treatment and prevention of fleas and ticks on dogs and cats.It can effectively control parasites on pets, protecting them from the harm caused by parasitic infections.
Fluralaner for Other Animals:As a long-acting ectoparasiticide for poultry or other wildlife.Fluralaner is effective against a broad spectrum of insect strains and is unlikely to induce resistance.For example, Fluralaner is used for chickens,the kill rate against Dermanyssus gallinae reaches as high as 99%.
Fluralaner Dosage Form
The Fluralaner API we supply can be used to manufacture the following types of formulations, depending on the target animal:
| Dosage Form | Administration Route | Main Indications |
| Chewable Tablets | Oral administration (chewed and swallowed by dogs) | For dogs and cats; kills fleas and ticks, effective for 12 weeks |
| Oral Drinking Solution | Mixed into drinking water | Special for poultry (chickens), treats poultry mite infestation |
| Topical Solution | Topical application on skin | For cats, prevention and treatment of flea and mite infestations |






