Description

Eprinomectin B1A is a highly potent semi-synthetic derivative of avermectin, representing the primary active component of the broad-spectrum parasiticide Eprinomectin. This compound is critical for developing effective endectocide formulations used in veterinary medicine. It is essential for manufacturers and formulators in the animal health industry seeking to produce reliable antiparasitic treatments for livestock and companion animals.

Application

• Veterinary Pharmaceutical Active Ingredient: Primary use as the key active component in injectable, pour-on, and topical endectocide formulations.
• Livestock Parasite Control: Formulated for the treatment and control of internal nematodes (roundworms) and external parasites (lice, mites) in cattle, sheep, and goats.
• Companion Animal Health: Used in developing parasiticides for pets, targeting heartworm prevention and treatment of ear mites and other ectoparasites.
• Agricultural Research & Development: Serves as a reference standard and starting material for R&D into new parasiticidal agents and combination therapies.
• API Synthesis: Intermediate in the synthesis of finished pharmaceutical active ingredients for the animal health market.
• Manufacturing of Premixes: Incorporated into medicated feed premixes for herd-level parasite management programs.

Basic Information

Product Name	Eprinomectin B1A
CAS No.	133305-88-1
Molecular Formula	C50H75NO14
Molecular Weight	914.1 g/mol
Synonyms	4"-Epi-Acetylamino-4"-deoxy-avermectin B1a; Eprinomectin B1a Component; (4"R)-4"-(Acetylamino)-4"-deoxy-avermectin B1a; Eprinomectin (B1a); MK-397 Component B1a; Eprinex Active Ingredient; UNII-6K5S6L6D0F; 4"-Deoxy-4"-(methylamino)avermectin B1a (5-O-demethyl-28-deoxy-25-(1,3-dimethyl-1-butenyl)-6,28-epoxy-23-(methoxycarbonyl)-12,13,14,15,16,17,18,19,20,21,22,23,24,25-tetradecahydro-13-hydroxy-4,11,21-trimethyl-2-oxo-7,19-epoxy-4,6-methano-6H,15H-furo[4,3,2-pq][2,6]benzodioxacyclooctadecin-15-one 4"-(N-methylacetamide))
EINECS	Contact for details

Quality Control

Our Eprinomectin B1A is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for assay and related substances, to ensure it meets high-purity standards suitable for pharmaceutical use. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation. For long-term storage, consider desiccated conditions.

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)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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