Description

Isoxazolo[5,4-D]Pyrimidine-4(5H)-Thione, 3-Methyl- (9Ci) is a specialized heterocyclic organic compound featuring a fused isoxazole and pyrimidine core with a thione functional group. This unique molecular architecture makes it a valuable key synthetic intermediate and scaffold for advanced research in medicinal chemistry. It is primarily sought by pharmaceutical R&D teams and fine chemical manufacturers engaged in developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a critical building block for the synthesis of novel drug candidates, particularly in oncology and antiviral research.
• Agrochemical Development: Used in the research and development of new pesticides and herbicides, leveraging its heterocyclic structure for bioactivity.
• Material Science Research: Acts as a precursor or monomer in the development of specialized polymers and organic electronic materials.
• Academic & Institutional R&D: Employed in universities and research institutes for studying heterocyclic chemistry, reaction mechanisms, and structure-activity relationships (SAR).
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for investigating biological pathways and target identification.

Basic Information

Product Name	Isoxazolo[5,4-D]Pyrimidine-4(5H)-Thione, 3-Methyl- (9Ci)
CAS No.	130783-68-5
Molecular Formula	C6H5N3OS
Molecular Weight	167.19 g/mol
Synonyms	3-Methylisoxazolo[5,4-d]pyrimidine-4(5H)-thione; 3-Methyl-4-thioxo-3,4-dihydroisoxazolo[5,4-d]pyrimidine; 3-Methyl-4,5-dihydroisoxazolo[5,4-d]pyrimidine-4-thione; 4(5H)-Isoxazolo[5,4-d]pyrimidinethione, 3-methyl-; 3-Methyl-4-thioxo-4,5-dihydroisoxazolo[5,4-d]pyrimidine
EINECS	Contact for details

Quality Control

Our production of Isoxazolo[5,4-D]Pyrimidine-4(5H)-Thione, 3-Methyl- (9Ci) adheres to stringent internal quality protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (NMR, IR, MS), to ensure chemical identity and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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