Description

[1,3]Oxathiolo[5,4-D]Pyrimidine (8Ci,9Ci) is a specialized heterocyclic organic compound featuring a fused oxathiole and pyrimidine ring system, serving as a critical advanced intermediate in modern synthetic chemistry. Its unique molecular architecture makes it a valuable building block for constructing complex pharmacologically active molecules and functional materials. This high-purity intermediate is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and material science sectors for developing novel active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of nucleoside analogs and other antiviral or anticancer drug candidates.
• Agrochemical Research: Used as a core scaffold for developing new herbicides, fungicides, and plant growth regulators.
• Material Science: Building block for creating novel organic semiconductors, liquid crystals, or photoactive polymers.
• Chemical Biology: Probe or linker molecule in biochemical research and the development of diagnostic tools.
• Academic & R&D: Serves as a standard or starting material for methodological studies in organic synthesis and heterocyclic chemistry.
• Custom Synthesis: Foundation for contract manufacturing organizations (CMOs) to produce client-specific, high-value target molecules.

Basic Information

Product Name	[1,3]Oxathiolo[5,4-D]Pyrimidine (8Ci,9Ci)
CAS No.	28648-33-1
Molecular Formula	C5H4N2OS
Molecular Weight	140.16 g/mol
Synonyms	[1,3]Oxathiolo[5,4-d]pyrimidine; Oxathiolo[5,4-d]pyrimidine; 1,3-Oxathiolo[5,4-d]pyrimidine; 28648-33-1; NSC 406051; 1,3-Oxathiolo(5,4-d)pyrimidine; Oxathiolo(5,4-d)pyrimidine; 1,3-Oxathiolo[5,4-d]pyrimidine (9CI)
EINECS	Contact for details

Quality Control

Our [1,3]Oxathiolo[5,4-D]Pyrimidine (8Ci,9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical quality attributes. Our commitment to cGMP principles and reliable supply chain integrity makes us a trusted partner for your critical R&D and production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from incompatible materials. For long-term storage, consider an inert atmosphere to ensure optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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