Description

Milbemycin B3 is a key macrocyclic lactone compound belonging to the milbemycin family, a group of natural products known for their potent biological activity. Its primary commercial value lies in its role as a crucial intermediate in the synthesis of high-value veterinary and agricultural acaricides and anthelmintics. This product is essential for manufacturers in the animal health and crop protection sectors developing next-generation parasitic control solutions.

Application

• Key Intermediate for Acaricides: A vital building block in the synthesis of advanced miticides and acaricides used in crop protection.
• Veterinary Pharmaceutical Synthesis: Used in the production of active pharmaceutical ingredients (APIs) for broad-spectrum animal parasite control products.
• Agrochemical Research & Development: Serves as a reference standard and starting material in R&D for novel pest management agents.
• Biopesticide Formulations: Employed in the development of semi-synthetic, environmentally benign pesticide formulations.

Basic Information

Product Name	Milbemycin B3
CAS No.	51596-13-5
Molecular Formula	C₃₂H₄₆O₇
Molecular Weight	542.71 g/mol
Synonyms	Milbemycin β3; 5-O-Demethylmilbemycin β3; LL-F28249α; Nemadectin; (2aE,4E,8E)-5-[(1S,2S,6S,8S,9S,10R,13S,17R,19S)-2,6,10,19-Tetramethyl-17-(2-methylpropyl)-3,20,22-trioxapentacyclo[11.9.0.0²,¹⁰.0⁴,⁸.0¹³,¹⁸]docosa-4,8-dien-9-yl]-2-hydroxy-2-methyl-6-oxohepta-4,8-dienoic acid
EINECS	Contact for details

Quality Control

Our Milbemycin B3 is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements for pharmaceutical and agrochemical intermediate use. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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 maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/IR)	Conforms to reference standard
Assay (HPLC)	≥ 95.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
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.