Description

1-Methyl-2-Pyrrolidinone 4-Methylbenzenesulfonate Salt is a high-purity organic salt with the CAS number 918659-71-9, formed from the reaction of N-Methyl-2-pyrrolidone (NMP) and p-Toluenesulfonic acid. This compound matters as a versatile reagent and intermediate, offering controlled reactivity and solubility in organic synthesis. It is primarily needed by pharmaceutical manufacturers and fine chemical producers for use in advanced chemical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) and specialty materials.

Application

• Pharmaceutical Intermediate: A key building block in the multi-step synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Chemical Synthesis Reagent: Used as a catalyst or a specialized reagent in organic reactions, including esterifications and alkylations.
• Polymer Chemistry: Employed in the production and modification of specialty polymers and resins.
• Electrolyte Additive: Potential use as a component or stabilizer in advanced battery electrolyte formulations.
• Research & Development: Serves as a valuable compound for method development and exploratory chemistry in R&D laboratories.
• Fine Chemical Production: Acts as an intermediate in the manufacture of dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	1-Methyl-2-Pyrrolidinone 4-Methylbenzenesulfonate Salt
CAS No.	918659-71-9
Molecular Formula	C12H17NO4S
Molecular Weight	271.33 g/mol
Synonyms	NMP p-Toluenesulfonate; N-Methyl-2-pyrrolidinone p-toluenesulfonate salt; 1-Methylpyrrolidin-2-one 4-methylbenzenesulfonate; NMP Tosylate; N-Methylpyrrolidone tosylate; p-Toluenesulfonic acid N-methyl-2-pyrrolidone salt; 4-Methylbenzenesulfonic acid compound with 1-methylpyrrolidin-2-one (1:1)
EINECS	Contact for details

Quality Control

Our 1-Methyl-2-Pyrrolidinone 4-Methylbenzenesulfonate Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profile, and residual solvents. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliable supply for critical applications.

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). Keep the container tightly sealed to prevent absorption of moisture from the air, which can affect product quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Meets ICH guidelines
Heavy Metals	< 20 ppm

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