Description

3H-Pyrazolo[4,3-D]Pyrimidine (8Ci,9Ci) is a high-purity, fused heterocyclic compound that serves as a critical building block in advanced organic synthesis. This versatile scaffold is essential for the development of novel pharmacologically active molecules, particularly in medicinal chemistry. It is primarily sought after by research institutions and pharmaceutical companies engaged in the discovery of new therapeutic agents, including kinase inhibitors and other targeted small-molecule drugs.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of purine analog-based drug candidates and kinase inhibitors.
• Medicinal Chemistry Research: Used as a core scaffold for constructing compound libraries in high-throughput screening for new biological targets.
• Agrochemical Development: Employed in the research and synthesis of novel herbicides and plant growth regulators.
• Biochemical Tool Compound: Serves as a starting material for creating labeled probes or inhibitors for enzymatic studies.
• Academic & Industrial R&D: Fundamental building block in heterocyclic chemistry research for exploring new chemical spaces and reaction methodologies.

Basic Information

Product Name	3H-Pyrazolo[4,3-D]Pyrimidine (8Ci,9Ci)
CAS No.	272-56-0
Molecular Formula	C5H4N4
Molecular Weight	120.11 g/mol
Synonyms	3H-Pyrazolo[4,3-d]pyrimidine; Pyrazolo[4,3-d]pyrimidine; 1H-Pyrazolo[4,3-d]pyrimidine; 272-56-0; 7H-Pyrazolo[4,3-d]pyrimidine; 1,4,5,6-Tetraazaindene; NSC 51143; CCRIS 5981
EINECS	205-981-3

Quality Control

Our 3H-Pyrazolo[4,3-D]Pyrimidine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods (NMR, IR). We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research or production specifications.

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). The compound may be hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere for long-term storage.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
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.