Description

3H-Pyrazol-3-One,2,4-Dihydro-4-Mercapto-5-Methyl-(9Ci) is a specialized heterocyclic compound featuring a reactive mercapto group, making it a valuable building block for advanced chemical synthesis. Its core value lies in its ability to act as a key intermediate in the development of pharmaceuticals, agrochemicals, and functional materials, where precise molecular architecture is critical. This product is essential for R&D chemists and process development scientists in the fine chemical, pharmaceutical, and life science industries seeking to create novel compounds with targeted properties.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting specific enzymes or receptors.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators, leveraging its heterocyclic core for biological activity.
• Chemical Synthesis Building Block: The reactive mercapto (-SH) group enables thioether formation, metal complexation, and other functionalization reactions in organic chemistry.
• Material Science: Potential applications in creating novel polymers, ligands for catalysis, or components in electronic materials due to its unique structure.
• Bioconjugation Chemistry: Can be utilized for modifying proteins, peptides, or other biomolecules in biochemical research and diagnostic assay development.

Basic Information

Product Name	3H-Pyrazol-3-One,2,4-Dihydro-4-Mercapto-5-Methyl-(9Ci)
CAS No.	403641-97-4
Molecular Formula	C4H6N2OS
Molecular Weight	130.17 g/mol
Synonyms	4-Mercapto-5-methyl-2,4-dihydro-3H-pyrazol-3-one; 5-Methyl-4-mercapto-2,4-dihydro-3H-pyrazol-3-one; 4-Mercapto-5-methyl-1H-pyrazol-3(2H)-one; 5-Methyl-4-sulfanyl-1,2-dihydropyrazol-3-one; 403641-97-4; 4-Thiol-5-methyl-2,4-dihydro-3H-pyrazol-3-one
EINECS	Contact for details

Quality Control

Every batch of 3H-Pyrazol-3-One,2,4-Dihydro-4-Mercapto-5-Methyl-(9Ci) undergoes rigorous analytical testing to ensure identity, purity, and consistency. Our quality management system is designed to meet the stringent requirements of GMP and ISO standards for fine chemical intermediates. Comprehensive Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, the container should be purged with inert gas after each opening to maintain product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
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.