Description

L-Leucine, n-Methylene-, Methyl Ester (9Ci) is a specialized amino acid derivative, a key building block in advanced organic synthesis. This high-purity intermediate is critical for ensuring precise molecular architecture and consistent reaction outcomes in complex chemical processes. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and peptide synthesis sectors for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, peptide mimetics, and active pharmaceutical ingredients (APIs).
• Peptide Synthesis: Serves as a protected leucine derivative in solid-phase and solution-phase peptide synthesis for research and production.
• Agrochemical Research: Used as a building block for developing new herbicides, fungicides, and plant growth regulators.
• Biochemical Research: Employed in enzymatic studies, metabolic pathway investigation, and as a standard in analytical method development.
• Fine Chemical Synthesis: A versatile intermediate for creating complex organic molecules, flavors, and fragrances.

Basic Information

Product Name	L-Leucine, n-Methylene-, Methyl Ester (9Ci)
CAS No.	741657-28-3
Molecular Formula	C8H15NO2
Molecular Weight	157.21 g/mol
Synonyms	L-Leucine, N-methylene-, methyl ester; Methyl N-methylene-L-leucinate; (S)-Methyl 2-(methyleneamino)-4-methylpentanoate; 4-Methyl-2-[(methyleneamino)pentanoic acid methyl ester; L-2-(Methyleneamino)-4-methylpentanoic acid methyl ester; Amino acid derivative CAS 741657-28-3; N-Methylene-L-leucine methyl ester
EINECS	Contact for details

Quality Control

Our L-Leucine, n-Methylene-, Methyl Ester (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting research and industrial-grade specifications. Certificates of Analysis (COA) detailing all test results are provided to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	[α]20/D: Specific range provided on COA
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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