Description

1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 2-Oxide (9Ci) is a high-value, reactive chemical intermediate, specifically an acid chloride derivative of a furoxan ring system. Its core value proposition lies in its ability to efficiently introduce the 4-methylfuroxan-3-carbonyl moiety into target molecules, serving as a critical building block for advanced synthesis. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries developing novel active ingredients, particularly those exploring nitrogen-rich heterocyclic scaffolds.

Application

This specialized intermediate is primarily utilized in research and development as well as scale-up production for the following applications:

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, especially those containing furoxan rings known for potential biological activity.
• Agrochemical Synthesis: Used in creating advanced herbicides, fungicides, or insecticides with new modes of action.
• Energetic Materials Research: Serves as a precursor in the development of high-energy-density materials (HEDMs) due to its nitrogen-oxygen rich furoxan structure.
• Ligand and Catalyst Development: Employed to synthesize complex chelating ligands for catalytic systems or metal-organic frameworks (MOFs).
• Polymer Modification: Can be used to introduce functional groups into polymer chains to alter material properties.
• Chemical Biology Probes: Useful for labeling or modifying biomolecules in research settings to study biological processes.

Basic Information

Product Name	1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 2-Oxide (9Ci)
CAS No.	50412-72-1
Molecular Formula	C4H3ClN2O3
Molecular Weight	162.53 g/mol
Synonyms	4-Methylfuroxan-3-carbonyl chloride; 3-Chlorocarbonyl-4-methyl-1,2,5-oxadiazole 2-oxide; 4-Methyl-1,2,5-oxadiazole-3-carbonyl chloride 2-oxide; 4-Methylfurazan-3-carbonyl chloride 1-oxide; 4-Methyl-[1,2,5]oxadiazolo[3,4-c]carbonyl chloride 2-oxide; 3-(Chlorocarbonyl)-4-methyl-1,2,5-oxadiazole N-oxide
EINECS	Contact for details

Quality Control

Our production of 1,2,5-Oxadiazole-3-Carbonyl Chloride, 4-Methyl-, 2-Oxide adheres to stringent quality protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure consistency and meet exacting R&D and process chemistry standards. 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. Due to its hygroscopic (moisture-sensitive) nature and reactivity as an acid chloride, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) and separated from strong bases and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Assay (Titration)	≥ 95.0%
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.