Suzhou Pharmaceutical Technology Co., Ltd. (China) supplies Selamectin API CAS 220119-17-5 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Selamectin API — Overview
Selamectin (CAS: 220119-17-5, also known as selamectina, selamectine, UK-124,114, Revolution active ingredient, and Stronghold active ingredient) is a topical veterinary antiparasitic API in the avermectin/macrocyclic lactone family. It is used in flea, heartworm, ear mite, sarcoptic mange, and intestinal parasite programs for dogs and cats where local regulations permit. Suzhou Pharmaceutical Technology Co., Ltd. supplies ≥97% Selamectin 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 | Selamectin |
| Structural Formula |  |
| Alias | Selamectina; Selamectine; UK-124,114; UK-124114; Revolution active ingredient; Stronghold active ingredient |
| CAS Number | 220119-17-5 |
| Molecular Formula | C₄₃H₆₃NO₁₁ |
| Molecular Weight | 770.0 g/mol |
| Purity | ≥97% (HPLC) |
| Appearance | White to yellowish crystalline powder |
| Storage | Store at 2–8°C, protected from light and moisture |
> Applications
Selamectin is a macrocyclic lactone endectocide developed for topical use in companion animals. It acts on parasite chloride channels and is relevant to veterinary formulation programs targeting fleas, heartworm prevention, ear mites, sarcoptic mange, and selected intestinal parasites. Buyers should confirm permitted species, indication, and dosage-form requirements in their destination markets.
Topical flea, heartworm, and mite formulation programs
A Veterinary Parasitology clinical series described selamectin as a broad-spectrum endectocide for dogs and cats after topical administration (Veterinary Parasitology, 2000, doi:10.1016/S0304-4017(00)00289-2). Randomized, controlled, masked field studies in North America also assessed topical selamectin for flea treatment and heartworm prevention in veterinary patients, supporting its relevance for companion-animal antiparasitic formulation development.
Formulation and research use
Selamectin API buyers usually evaluate assay, related substances, residual solvents, isomer profile, particle size, and stability data before moving from sample quantities to pilot or commercial batches. The material is intended for qualified pharmaceutical, compounding, or research buyers, not for direct animal administration as bulk powder.
> Sourcing & Supply
Suzhou Pharmaceutical Technology Co., Ltd. is an R&D-driven pharmaceutical company with in-house synthesis and analytical capability for Selamectin 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 Selamectin 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 Selamectin 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
Selamectin 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
Selamectin 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 Selamectin API?
The minimum order quantity for Selamectin 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 Selamectin bulk order?
All Selamectin 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 Selamectin 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 Selamectin API to South America?
Yes. We support Selamectin API inquiries from Brazil, Argentina, Colombia, Chile, Peru, Ecuador, Bolivia, Paraguay, and Uruguay.
Can buyers in Australia, New Zealand, Mexico, or Canada order Selamectin?
Yes. We supply Selamectin API to buyers in Australia, New Zealand, Mexico, and Canada. COA and MSDS are included with all orders.
What is Selamectin used for in veterinary medicine?
Selamectin is used as an antiparasitic active ingredient in topical veterinary products for dogs and cats where local regulations allow.
What is the mechanism of action of Selamectin?
Selamectin is a macrocyclic lactone endectocide that acts on parasite chloride channels, disrupting neuromuscular function in susceptible parasites.
Is Revolution the same as Selamectin?
Revolution is a finished veterinary product brand whose active ingredient is selamectin. We supply bulk Selamectin API, not finished spot-on products.
What purity is available for Selamectin CAS 220119-17-5?
Our standard Selamectin API specification is ≥97% purity by HPLC. Each batch is released with a COA covering agreed specification items.
How is Selamectin packaged and shipped internationally?
Selamectin API is shipped in foil bags or foil-lined fibre drums with protection from light and moisture during international transit.
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> Request a Quote or Sample
To request a quote or sample for Selamectin API (CAS 220119-17-5), 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 (veterinary formulation / compounding / research / other). We respond to all inquiries within 1 business day.
Last reviewed: June 2026