Description

Avermectin B2A CAS NO 65195-57-5 is a potent, naturally occurring macrocyclic lactone compound belonging to the avermectin family. This high-purity intermediate is critical for the synthesis of advanced agricultural and veterinary pharmaceuticals, offering exceptional efficacy against a broad spectrum of parasites. It is an essential raw material for manufacturers developing next-generation acaricides, insecticides, and anti-parasitic agents targeting crop protection and animal health markets globally.

Application

• Key intermediate in the synthesis of high-performance agricultural acaricides and insecticides.
• Precursor for manufacturing advanced veterinary anti-parasitic formulations.
• Research and development of novel pharmaceutical active ingredients for parasitic diseases.
• Production of specialty crop protection products for fruits, vegetables, and ornamental plants.
• Formulation of public health insecticides for vector control programs.
• Standard reference material for analytical testing and quality control laboratories.

Basic Information

Product Name	Avermectin B2A
CAS No.	65195-57-5
Molecular Formula	C48H72O14
Molecular Weight	873.1 g/mol
Synonyms	Avermectin B2a; 5-O-Demethylavermectin A1a; Abamectin B2a; MK-0936 Component B2a; (10E,14E,16E)-(1R,4S,5'S,6R,6'R,8R,12S,13S,20R,21R,24S)-6'-[(S)-sec-Butyl]-21,24-dihydroxy-5',11,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6-spiro-2'-(5',6'-dihydro-2'H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3-O-methyl-α-L-arabino-hexopyranosyl)-3-O-methyl-α-L-arabino-hexopyranoside
EINECS	Contact for details

Quality Control

Our Avermectin B2A is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in advanced synthesis. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). Keep the container sealed to protect from 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)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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