Description

4-Oxo-2,2,6,6-Tetramethyl-3-Piperidinecarboxylic Acid Methyl Ester is a high-purity, synthetically valuable piperidine derivative that serves as a critical building block in advanced organic synthesis. Its importance lies in its role as a key precursor for the synthesis of hindered amine light stabilizers (HALS) and other high-performance additives. This compound is essential for R&D and production teams in the polymer, agrochemical, and pharmaceutical industries seeking to develop materials with enhanced stability and functionality.

Application

• Hindered Amine Light Stabilizer (HALS) Synthesis: A primary intermediate for manufacturing high-performance UV stabilizers used in plastics, coatings, and films.
• Pharmaceutical Intermediates: Serves as a key chiral building block in the synthesis of complex active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents and pesticides requiring specific sterically hindered amine structures.
• Polymer Additives: A precursor for antioxidants and other specialty additives that improve the longevity and performance of engineering polymers.
• Organic Synthesis & Research: A versatile synthon in academic and industrial R&D for constructing complex nitrogen-containing heterocycles.
• Specialty Chemical Manufacturing: Employed in the production of dyes, pigments, and other performance chemicals where its specific molecular framework is required.

Basic Information

Product Name	4-Oxo-2,2,6,6-Tetramethyl-3-Piperidinecarboxylic Acid Methyl Ester
CAS No.	1159977-55-5
Molecular Formula	C11H19NO3
Molecular Weight	213.27 g/mol
Synonyms	Methyl 4-oxo-2,2,6,6-tetramethylpiperidine-3-carboxylate; 3-Carbomethoxy-2,2,6,6-tetramethyl-4-piperidone; 2,2,6,6-Tetramethyl-4-oxo-piperidine-3-carboxylic acid methyl ester; 4-Oxo-TEMPO methyl ester precursor; HALS intermediate; 3-Methoxycarbonyl-2,2,6,6-tetramethyl-4-piperidone
EINECS	Contact for details

Quality Control

Our 4-Oxo-2,2,6,6-Tetramethyl-3-Piperidinecarboxylic Acid Methyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which may affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.