
Lotilaner CAS 1369852-71-0
Lotilaner (CAS 1369852-71-0) is a fast-acting, long-lasting isoxazoline for dogs, effectively preventing and treating fleas and ticks with high safety and reliability. Ideal for veterinary use and oral administration in chewable formulations.
What Is Lotilaner?
Lotilaner is a breakthrough antiparasitic agent in the isoxazoline class. While it has been a staple in veterinary medicine for years, it recently made headlines as the first FDA-approved treatment for Demodex blepharitis in humans.
As an experienced Lotilaner supplier, Novopept ensures consistent batch quality, scalable production, and efficient global delivery.
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Property |
Specifications |
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CAS Number |
1369852-71-0 |
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Molecular Formula |
C₂₀H₁₄Cl₃F₆N₃O₃ |
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Molecular Weight |
596.76 g/mol |
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IUPAC Name |
3-methyl-N-[2-oxo-2-(2,2,2-trifluoroethylamino)ethyl]-5-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-1,2-oxazol-3-yl]thiophene-2-carboxamide |
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Purity |
98% |
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Appearance |
White to off-white solid powder |
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Solubility |
Soluble in DMSO ($\ge$ 100 mg/mL); Ethanol; Methanol. Insoluble in water. |
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Density |
~1.50 g/cm³ (at 20 °C) |
Mechanism of Action (MOA)
The lotilaner mechanism of action is highly specialized. It functions as a non-competitive antagonist of gamma-aminobutyric acid (GABA)-gated chloride channels.
- Parasite Targeting: It selectively binds to the nervous system of mites and insects.
- Paralysis and Death: By blocking chloride channels, it causes uncontrolled hyperexcitation and spastic paralysis in the parasite.
- Safety Profile: Because it is highly selective for insect/mite receptors over mammalian ones, it is safe for human and animal use when applied as directed.
What is lotilaner used for?
In humans, it is used to eradicate Demodex mites-microscopic parasites that live in eyelash follicles. Left untreated, these mites cause "crusty" lashes (collarettes), redness, and chronic eyelid irritation.
Benefits and Applications
First-in-Class: It is the only FDA-approved medication that addresses the root cause of Demodex blepharitis.
Rapid Results: Clinical trials show significant reduction in eyelid redness and mite density within a 6-week treatment cycle.
Ease of Use: A simple twice-daily drop routine for 42 days.
Common Side Effects of lotilaner
While lotilaner ophthalmic and oral versions are generally safe, some side effects may occur:
For Human (Ophthalmic) Use:
- Most Common: A temporary stinging or burning sensation at the site of application (stinging in ~10% of users).
- Less Common: Eye redness, blurred vision, or the development of a small eyelid bump (chalazion).
For Veterinary Use:
- Common: Elevated BUN (blood urea nitrogen), vomiting, or diarrhea.
- Neurological Warning: Use with caution in pets with a history of seizures, as isoxazolines have been linked to neurological adverse events in rare cases.
Frequently Asked Questions
Q1: Is Lotilaner safe for cats?
Lotilaner is primarily formulated for dogs and is not approved for use in cats in most regions. For feline flea and tick control, veterinarians typically recommend alternatives such as topical isoxazolines (e.g., Esafoxolaner) or other approved cat-specific formulations. Always consult your veterinarian before giving any dog-specific medication to a cat.
Q2: Is Lotilaner safe for dogs?
Yes. Lotilaner is FDA-approved for dogs and generally well-tolerated. Common side effects are mild and rare, including vomiting, diarrhea, lethargy, or temporary inappetence. Dogs with a history of neurological disorders should be monitored carefully, as is typical with isoxazoline-class drugs.
Q3: What do holistic veterinarians recommend for flea and tick prevention?
Holistic or integrative veterinarians often recommend a combination of environmental control and preventive supplements in addition to veterinary-approved medications:
Regular grooming and bathing
Vacuuming and washing bedding frequently
Natural repellents such as essential oil sprays (used with caution)
Veterinary-approved oral or topical medications, including isoxazolines like Lotilaner, for safe and effective protection
Q4: How quickly does Lotilaner start working?
Lotilaner is known for its rapid speed of kill:
Fleas: Begin dying within 4 hours of administration
Ticks: Begin dying within 8–12 hours
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