Description

(-)-trans-Resmethrin is a highly active stereoisomer of the synthetic pyrethroid insecticide resmethrin. This specific enantiomer is valued for its potent insecticidal activity against a broad spectrum of pests, offering an effective solution for vector control and crop protection. It is a critical active ingredient for manufacturers of professional and household insecticide formulations targeting markets in public health, agriculture, and stored product protection.

Application

• Public Health Insecticides: A key component in formulations for mosquito control, fly sprays, and other space sprays for disease vector management.
• Agricultural Crop Protection: Used to protect a variety of crops from lepidopteran, coleopteran, and other insect pests.
• Stored Product Protection: Effective in controlling insects in stored grains, tobacco, and other commodities.
• Household & Garden Pest Control: Formulated into aerosols, coils, and liquid sprays for consumer use against flies, mosquitoes, and ants.
• Animal Health: Incorporated into products for controlling ectoparasites on livestock and pets.
• Industrial & Institutional (I&I): Used in pest management programs for food processing plants, warehouses, and commercial facilities.

Basic Information

Product Name	(-)-trans-Resmethrin
CAS No.	33911-28-3
Molecular Formula	C22H26O3
Molecular Weight	338.44 g/mol
Synonyms	(1R,3R)-2,2-Dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylic acid (5-benzyl-3-furyl)methyl ester; (1R)-trans-Resmethrin; (+)-trans-Resmethrin (obsolete naming); d-trans-Resmethrin; Bioresmethrin (Note: Bioresmethrin typically refers to a mixture rich in this isomer); SBP-1382; Chrysron Forte; NRDC 107
EINECS	251-710-8

Quality Control

Our (-)-trans-Resmethrin is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous internal specifications using advanced analytical techniques. A comprehensive Certificate of Analysis (COA) detailing assay, isomeric purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This compound is easily oxidized; for long-term storage, consider an inert atmosphere. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Isomeric Purity (HPLC)	(-)-trans isomer ≥ 90.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Melting Point	56 - 60 °C

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