Description

Selamectin CAS NO 220119-17-5 is a semi-synthetic avermectin derivative, a potent macrocyclic lactone with broad-spectrum antiparasitic activity. It is a critical active pharmaceutical ingredient (API) valued for its efficacy and safety profile in veterinary medicine. This compound is essential for manufacturers developing endectocide formulations targeting parasites in companion animals and livestock.

Application

• Veterinary Pharmaceutical API: Primary active ingredient in topical "spot-on" solutions and injectable formulations for companion animals.
• Broad-Spectrum Parasite Control: Effective against fleas (Ctenocephalides felis), heartworm (Dirofilaria immitis), ear mites (Otodectes cynotis), and certain gastrointestinal nematodes in dogs and cats.
• Livestock Parasiticide: Used in formulations for controlling external and internal parasites in various livestock species.
• Research & Development: Serves as a reference standard and key intermediate in pharmacological research for novel antiparasitic agents.
• Generic Drug Manufacturing: Core component for producing generic versions of leading veterinary parasiticide brands.

Basic Information

Product Name	Selamectin
CAS No.	220119-17-5
Molecular Formula	C43H63NO11
Molecular Weight	769.96 g/mol
Synonyms	UK-124,114; Selamectine; Selamectina; Selamectinum; (5Z,25S)-25-Cyclohexyl-4'-O-de(2,6-dideoxy-3-O-methyl-α-L-arabino-hexopyranosyl)-5-demethoxy-25-de(1-methylpropyl)-22,23-dihydro-5-(hydroxyimino)avermectin A1a; Revolution® (Brand Name API); Stronghold® (Brand Name API)
EINECS	Contact for details

Quality Control

Our Selamectin is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to ensure it meets high-purity pharmacopeial standards suitable for API use. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with specified specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.