Description

(4-Oxothieno[2,3-D]Pyrimidin-3(4H)-Yl)Acetic Acid is a high-purity heterocyclic building block of significant interest in advanced organic synthesis. This compound serves as a critical intermediate for the development of novel pharmacologically active molecules, particularly within medicinal chemistry research. It is primarily sought by pharmaceutical R&D laboratories and fine chemical manufacturers engaged in the synthesis of complex, target-specific compounds. The product is supplied with full analytical documentation to ensure batch-to-batch consistency and support rigorous development workflows.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting specific enzymatic pathways.
• Medicinal Chemistry Research: Used in high-throughput screening and structure-activity relationship (SAR) studies to develop new therapeutic agents.
• Chemical Biology Probes: Serves as a core scaffold for developing molecular probes to study biological processes and disease mechanisms.
• Fine Chemical Synthesis: An essential precursor for creating more complex heterocyclic compounds with specialized functionalities.
• Academic & Institutional R&D: Utilized in university and research institute laboratories for exploratory synthetic chemistry and grant-funded projects.
• Contract Research & Manufacturing (CRO/CMO): Supplied to service organizations supporting the pharmaceutical and biotechnology industries.

Basic Information

Product Name	(4-Oxothieno[2,3-D]Pyrimidin-3(4H)-Yl)Acetic Acid
CAS No.	18740-34-6
Molecular Formula	C8H6N2O3S
Molecular Weight	210.21 g/mol
Synonyms	3-Carboxymethyl-4-hydroxythieno[2,3-d]pyrimidine; 2-(4-Oxo-3,4-dihydrothieno[2,3-d]pyrimidin-3-yl)acetic acid; Thieno[2,3-d]pyrimidine-3-acetic acid, 4-oxo-; 3-(Carboxymethyl)-4-hydroxythieno[2,3-d]pyrimidine; (4-Oxo-3,4-dihydrothieno[2,3-d]pyrimidin-3-yl)acetic acid; 18740-34-6; Thienopyrimidine acetic acid derivative
EINECS	Contact for details

Quality Control

Our (4-Oxothieno[2,3-D]Pyrimidin-3(4H)-Yl)Acetic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to confirm identity, purity, and conformity to established specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, ensuring full traceability and supporting your regulatory and research documentation 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). This compound may be moisture-sensitive; keep the container tightly sealed when not in use to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 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.