Description

1-Methyl-3-Thien-2-Yl-1H-Pyrazole-5-Carbaldehyde is a high-purity heterocyclic aldehyde building block of significant interest in advanced organic synthesis. This compound matters as a versatile and critical precursor for constructing complex molecular architectures, particularly in pharmaceutical and agrochemical research. It is primarily needed by R&D chemists and process development scientists working on novel active ingredients, where its unique fused thiophene-pyrazole core enables the exploration of new chemical space.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Synthesis: Serves as a building block for novel herbicides, fungicides, and insecticides, leveraging its heterocyclic structure for bioactivity.
• Material Science Research: Used in the development of organic semiconductors, ligands for catalysis, and functional polymers due to its electron-rich aromatic system.
• Chemical Biology Probes: Employed in the synthesis of molecular probes and tags for studying biological processes and target engagement.
• Custom Synthesis & Contract Manufacturing: A critical starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences industry.

Basic Information

Product Name	1-Methyl-3-Thien-2-Yl-1H-Pyrazole-5-Carbaldehyde
CAS No.	879896-48-7
Molecular Formula	C9H8N2OS
Molecular Weight	192.24 g/mol
Synonyms	1-Methyl-3-(thiophen-2-yl)-1H-pyrazole-5-carboxaldehyde; 1-Methyl-3-(2-thienyl)-1H-pyrazole-5-carbaldehyde; 5-Formyl-1-methyl-3-(2-thienyl)pyrazole; 1-Methyl-3-thiophen-2-yl-1H-pyrazole-5-carbaldehyde; 879896-48-7; 1-Methyl-3-(2-thienyl)-1H-pyrazole-5-carboxaldehyde; 1-Methyl-3-(thien-2-yl)-1H-pyrazole-5-carbaldehyde
EINECS	Contact for details

Quality Control

Our 1-Methyl-3-Thien-2-Yl-1H-Pyrazole-5-Carbaldehyde is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by NMR and IR spectroscopy, to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This material is easily oxidized and should be handled and stored under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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