Description

3-Methylglutaric Anhydride is a versatile cyclic anhydride used as a key synthetic intermediate in organic chemistry. Its reactive anhydride functionality makes it valuable for introducing the 3-methylglutaroyl moiety into target molecules, enabling the synthesis of complex compounds with specific structural features. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop new active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a branched dicarboxylic acid derivative.
• Agrochemical Synthesis: Serves as a building block for creating novel herbicides, fungicides, and plant growth regulators.
• Polymer & Resin Modifier: Employed in the production of specialty polyesters, alkyd resins, and epoxy curing agents to modify flexibility and thermal properties.
• Organic Synthesis Reagent: A valuable reagent for peptide coupling reactions and the preparation of esters, amides, and imides in research and development.
• Crosslinking Agent: Used in coatings and adhesive formulations to enhance durability and chemical resistance.
• Flavor & Fragrance Ingredient Synthesis: Acts as a precursor in the manufacture of certain aroma chemicals and fragrance compounds.

Basic Information

Product Name	3-Methylglutaric Anhydride
CAS No.	4166-53-4
Molecular Formula	C6H8O3
Molecular Weight	128.13 g/mol
Synonyms	3-Methylglutaric acid anhydride; 3-Methylpentanedioic anhydride; 3-Methyl-1,5-pentanedioic acid cyclic anhydride; β-Methylglutaric anhydride; 3-Methylglutaric acid cyclic anhydride; 3-MGA; 3-Methylglutaric Anhydride
EINECS	224-045-1

Quality Control

Our 3-Methylglutaric Anhydride is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the high standards required for industrial and research applications. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with each shipment and is available upon request.

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 product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis. Keep away from strong bases, strong oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	40 - 45 °C
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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