Description

Thieno[2,3-D]Pyrimidin-4(3H)-One, 6-Ethyl-3-(2-Propenyl)- (9Ci) is a high-value heterocyclic organic compound belonging to the thienopyrimidinone class, serving as a critical advanced pharmaceutical intermediate and key building block in modern synthetic chemistry. Its unique fused-ring structure makes it indispensable for the research and development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring targeted molecular scaffolds. This product is essential for pharmaceutical R&D laboratories, contract research organizations (CROs), and fine chemical manufacturers engaged in the synthesis of complex molecules.

Application

• Pharmaceutical Intermediate: A crucial precursor in the multi-step synthesis of novel drug candidates, especially kinase inhibitors and other targeted therapies.
• Medicinal Chemistry Research: Used as a versatile scaffold for constructing compound libraries in high-throughput screening and structure-activity relationship (SAR) studies.
• Agrochemical Development: Serves as a building block for creating new active ingredients in crop protection products.
• Material Science: Potential application in the development of organic electronic materials due to its conjugated π-system.
• Academic & Institutional Research: Employed in universities and research institutes for fundamental studies in heterocyclic chemistry and reaction methodology.
• Custom Synthesis: A starting material for contract manufacturing organizations (CMOs) specializing in bespoke, complex organic molecules.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidin-4(3H)-One, 6-Ethyl-3-(2-Propenyl)- (9Ci)
CAS No.	667903-47-1
Molecular Formula	C11H12N2OS
Molecular Weight	220.29 g/mol
Synonyms	6-Ethyl-3-(prop-2-en-1-yl)thieno[2,3-d]pyrimidin-4(3H)-one; 3-Allyl-6-ethylthieno[2,3-d]pyrimidin-4(3H)-one; 6-Ethyl-3-(2-propenyl)-4H-thieno[2,3-d]pyrimidin-4-one; Thieno[2,3-d]pyrimidin-4(3H)-one, 6-ethyl-3-(2-propenyl)-; 667903-47-1; Allyl 6-ethylthienopyrimidinone derivative
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to stringent quality management systems. Every batch undergoes comprehensive analytical characterization using techniques including HPLC, NMR, and mass spectrometry to ensure structural identity and purity. We provide a detailed Certificate of Analysis (COA) with each shipment, documenting critical quality attributes. Our commitment to cGMP principles and ISO-aligned processes ensures consistent quality and traceability for our global B2B clients.

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 maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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