Description

Thieno[2,3-D]Pyrimidine (8Ci,9Ci) is a high-purity fused heterocyclic compound that serves as a critical building block in advanced organic synthesis. Its unique molecular architecture makes it an invaluable scaffold for developing novel active pharmaceutical ingredients (APIs) and functional materials. This compound is primarily sought after by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and material science sectors for creating new molecules with targeted properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of complex drug candidates, particularly those targeting kinase inhibition and other therapeutic pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Material Science: Serves as a building block for organic semiconductors, conductive polymers, and light-emitting materials due to its electron-rich structure.
• Chemical Biology: Employed as a molecular probe or a core structure in fragment-based drug discovery (FBDD) and medicinal chemistry programs.
• Academic & Contract Research: Utilized in universities and CROs (Contract Research Organizations) for fundamental research and custom synthesis projects.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidine (8Ci,9Ci)
CAS No.	272-24-2
Molecular Formula	C6H4N2S
Molecular Weight	136.17 g/mol
Synonyms	Thieno[2,3-d]pyrimidine; Thieno[2,3-d]pyrimidine (8CI,9CI); 272-24-2; NSC 403697; Thieno[2,3-d]pyrimidine, 8CI,9CI; 4H-Thieno[2,3-d]pyrimidine; 4H-Thieno[2,3-d]pyrimidine (8CI,9CI)
EINECS	205-982-5

Quality Control

Our Thieno[2,3-D]Pyrimidine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to confirm identity and purity. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We adhere to cGMP principles where applicable, and our quality systems support development from research to commercial scale.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and away from direct light sources to maintain stability and purity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
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.