Description

1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 5-Oxide (9Ci) CAS NO 50412-70-9 is a specialized heterocyclic building block and reactive intermediate of significant interest in advanced organic synthesis. Its value lies in its unique fused oxadiazole N-oxide structure, which serves as a key precursor for introducing functionalized heterocyclic motifs into target molecules. This compound is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, particularly those targeting neurological disorders and inflammation, where the oxadiazole scaffold is pharmacologically relevant.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging its heterocyclic core to modulate biological activity.
• Material Science Research: Serves as a precursor for creating specialized polymers, ligands, or metal-organic frameworks (MOFs) with unique electronic or catalytic properties.
• Energetic Materials Development: Investigated in controlled research settings for the synthesis of high-energy-density materials (HEDMs) due to its nitrogen- and oxygen-rich fused ring system.
• Chemical Biology Probes: Utilized to develop activity-based probes or covalent inhibitors for studying enzyme function and protein interactions.
• Academic & Contract Research: A valuable reagent for methodology development in organic chemistry, enabling novel cyclization and functionalization reactions.

Basic Information

Item	Details
Product Name	1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 5-Oxide (9Ci)
CAS No.	50412-70-9
Molecular Formula	C4H3ClN2O3
Molecular Weight	162.53 g/mol
Synonyms	4-Methyl-1,2,5-oxadiazole-3-carbonyl chloride 5-oxide; 4-Methyl-furazan-3-carbonyl chloride 1-oxide; 3-(Chlorocarbonyl)-4-methyl-1,2,5-oxadiazole 5-oxide; 4-Methyl-1,2,5-oxadiazole-3-carboxylic acid chloride 5-oxide; 4-Methyl-[1,2,5]oxadiazolo[3,4-c]pyridine 3-carbonyl chloride N-oxide; 4-Methyl-furoxan-3-carbonyl chloride
EINECS	Contact for details

Quality Control

Our production of 1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 5-Oxide adheres to stringent quality protocols to ensure batch-to-batch consistency and reliability for your synthetic workflows. Each lot undergoes comprehensive analytical characterization, including HPLC for purity and NMR for structural confirmation. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We operate under a cGMP-compliant quality management system for research-grade materials, ensuring traceability and documentation integrity.

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 (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Solubility	Soluble in common organic solvents (e.g., DCM, THF, Acetonitrile)

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