Description

2-Methylsuccinic Acid (CAS NO 498-21-5) is a versatile dicarboxylic acid derivative that serves as a key chiral building block and intermediate in advanced organic synthesis. Its value lies in its ability to introduce both carboxylic acid functionality and a methyl-branched carbon chain, enabling the production of fine chemicals with specific stereochemistry and properties. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop new active ingredients and high-performance materials.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of chiral active pharmaceutical ingredients (APIs), particularly for compounds requiring specific stereocenters.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its structure imparts desired biological activity.
• Polymer & Resin Modifier: Acts as a monomer or cross-linking agent in the manufacture of polyesters, alkyd resins, and other specialty polymers to modify flexibility and thermal properties.
• Fine Chemical & Flavor/Fragrance Ingredient: Serves as a starting material for synthesizing complex esters and other compounds used in flavors, fragrances, and cosmetic ingredients.
• Chiral Catalyst & Ligand Synthesis: Employed in the development of chiral catalysts and ligands for asymmetric synthesis applications.
• Corrosion Inhibitor Formulation: A component in specialty chemical formulations designed to protect metal surfaces in industrial processes.
• Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and material science.

Basic Information

Product Name	2-Methylsuccinic Acid
CAS No.	498-21-5
Molecular Formula	C5H8O4
Molecular Weight	132.11 g/mol
Synonyms	Pyrotartaric Acid; Methylsuccinic Acid; (R,S)-2-Methylbutanedioic Acid; 2-Methylbutanedioic Acid; (±)-Methylsuccinic Acid; DL-2-Methylsuccinic Acid; α-Methylsuccinic Acid
EINECS	207-862-3

Quality Control

Our 2-Methylsuccinic Acid is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting results for assay, chiral purity (if applicable), and key impurities are provided with each shipment. We support compliance with global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality. Keep away from strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	110 - 115 °C
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1 %

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