Description

3-(4-Isocyanatophenyl)-1-Methyl-1H-Pyrazole is a specialized aromatic isocyanate derivative that serves as a high-value building block in advanced organic synthesis. Its core value lies in its dual functionality, combining a reactive isocyanate group with a pyrazole heterocycle, enabling the creation of novel polymers and fine chemicals with tailored properties. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors seeking to develop new active ingredients or functional polymers.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in kinase inhibitor research.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides with enhanced efficacy.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for producing specialty polyurethanes, polyureas, and high-performance coatings with unique thermal or mechanical properties.
• Liquid Crystal & OLED Materials: A precursor in the synthesis of advanced electronic materials for displays and lighting applications.
• Chemical Research & Development: A versatile reagent for exploring new heterocyclic chemistry and creating custom molecular libraries.
• Adhesive & Sealant Formulations: Imparts specific reactivity and durability when incorporated into high-end adhesive systems.

Basic Information

Item	Information
Product Name	3-(4-Isocyanatophenyl)-1-Methyl-1H-Pyrazole
CAS No.	921938-54-7
Molecular Formula	C11H9N3O
Molecular Weight	199.21 g/mol
Synonyms	1-Methyl-3-(4-isocyanatophenyl)-1H-pyrazole; 4-(1-Methyl-1H-pyrazol-3-yl)phenyl isocyanate; 3-(p-Isocyanatophenyl)-1-methylpyrazole; 1-Methyl-3-(p-isocyanatophenyl)pyrazole; 921938-54-7; 4-(1-Methylpyrazol-3-yl)phenyl isocyanate
EINECS	Contact for details

Quality Control

Our production of 3-(4-Isocyanatophenyl)-1-Methyl-1H-Pyrazole adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is characterized by multiple analytical techniques, including HPLC, NMR, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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 moisture-sensitive (hygroscopic) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation by atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Melting Point	Contact for details

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