Description

(-)-n-Dodecyl-n-Methylephedrinium Bromide is a high-purity, chiral quaternary ammonium salt derived from ephedrine, serving as a specialized cationic surfactant and phase-transfer catalyst. Its molecular structure imparts unique surface-active and stereoselective properties critical for advanced chemical synthesis and formulation processes. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require precise control over reaction environments and interfacial activity.

Application

• Phase-Transfer Catalysis (PTC): Facilitates reactions between reagents in immiscible phases, particularly useful in alkylation, esterification, and displacement reactions under mild conditions.
• Asymmetric Synthesis: Acts as a chiral catalyst or additive to induce enantioselectivity in the production of optically active pharmaceutical intermediates.
• Surfactant & Micelle Formation: Used in the formulation of specialized detergents, emulsifiers, and for creating structured media in analytical chemistry and material science.
• Biochemical Research: Employed in membrane studies, protein purification, and as a templating agent in nanotechnology due to its amphiphilic nature.
• Pharmaceutical Intermediates: Serves as a key building block or catalyst in the synthesis of active pharmaceutical ingredients (APIs) requiring quaternary ammonium functionalities.

Basic Information

Item	Details
Product Name	(-)-n-Dodecyl-n-Methylephedrinium Bromide
CAS No.	31351-20-9
Molecular Formula	C₂₄H₄₂BrNO
Molecular Weight	440.50 g/mol
Synonyms	(-)-N-Dodecyl-N-methylephedrinium Bromide; Dodecylmethylephedrinium Bromide; (1R,2S)-2-(Methylamino)-1-phenyl-1-propanol Dodecyl Methyl Ether Bromide; L-Ephedrine Dodecyl Methyl Ether Bromide; N-Dodecyl-N-methylephedrine Bromide; (1R,2S)-N-Dodecyl-N-methylpseudoephedrinium Bromide; CATB (Chiral Ammonium-Type Catalyst B)
EINECS	Contact for details

Quality Control

Every batch of (-)-n-Dodecyl-n-Methylephedrinium Bromide is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemicals. Comprehensive analytical testing, including chiral purity assessment by HPLC, is performed to guarantee identity, potency, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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