Description

Sodium 1-Methyl-1H-Pyrazole-4-Sulfinate is a versatile organosulfur building block and nucleophilic sulfinate reagent. This compound is valued for its role in introducing the 1-methylpyrazole-4-sulfonyl moiety into target molecules, enabling the synthesis of complex heterocyclic systems. It is primarily utilized by researchers and manufacturers in the pharmaceutical and agrochemical industries for the development of active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block for synthesizing active pharmaceutical ingredients (APIs), particularly those containing sulfonamide or sulfone functional groups.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides that incorporate pyrazole-sulfonyl motifs.
• Material Science Research: Serves as a precursor for creating functionalized polymers or organic electronic materials with specific sulfinate-derived properties.
• Chemical Biology & Proteomics: Can be employed as a reagent for bioconjugation or as a building block for activity-based probes targeting specific enzymes.
• Cross-Coupling Reactions: Acts as a coupling partner in transition metal-catalyzed reactions to form carbon-sulfur bonds.
• Ligand Synthesis: Useful for preparing specialized pyrazole-containing ligands for catalysis and coordination chemistry.

Basic Information

Product Name	Sodium 1-Methyl-1H-Pyrazole-4-Sulfinate
CAS No.	1138034-18-0
Molecular Formula	C4H5N2NaO2S
Molecular Weight	168.15 g/mol
Synonyms	1-Methyl-1H-pyrazole-4-sulfinic acid sodium salt; Sodium 1-methylpyrazole-4-sulfinate; 1-Methyl-4-sulfinopyrazole sodium salt; 4-Sulfino-1-methylpyrazole sodium salt; 1-Methyl-1H-4-pyrazolesulfinic acid sodium salt; 1-Methylpyrazole-4-sulfinate sodium; 1-Methyl-4-pyrazolesulfinic acid sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 1-Methyl-1H-Pyrazole-4-Sulfinate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via NMR and IR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Area %)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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