Description

2H-Pyrazolo[4,3-D]Pyrimidine (8Ci,9Ci) is a high-purity heterocyclic organic compound, serving as a critical building block in advanced pharmaceutical and agrochemical synthesis. Its fused pyrazolo-pyrimidine core structure makes it a versatile scaffold for developing novel active ingredients. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries seeking to innovate in drug discovery and specialty chemical production.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of nucleoside analogs, kinase inhibitors, and other biologically active molecules targeting various therapeutic areas.
• Agrochemical Research: Used as a core structure for developing new herbicides, fungicides, and plant growth regulators with enhanced efficacy.
• Chemical Biology Probe: Serves as a scaffold for creating tool compounds and probes to study enzyme function and cellular signaling pathways.
• Material Science: Investigated as a building block for organic electronic materials, such as ligands in coordination polymers or components in organic semiconductors.
• Academic & Contract Research: Supplied to universities and CROs (Contract Research Organizations) for fundamental research in medicinal and synthetic organic chemistry.

Basic Information

Item	Detail
Product Name	2H-Pyrazolo[4,3-D]Pyrimidine (8Ci,9Ci)
CAS No.	272-55-9
Molecular Formula	C5H4N4
Molecular Weight	120.11 g/mol
Synonyms	2H-Pyrazolo[4,3-d]pyrimidine; 1H-Pyrazolo[4,3-d]pyrimidine; Pyrazolo[4,3-d]pyrimidine; 272-55-9; 1,4,5,6-Tetraazaindene; NSC 51143; 1H-1,2,3-Triazolo[4,5-d]pyrimidine (tautomer); Pyrazolopyrimidine
EINECS	Contact for details

Quality Control

Our 2H-Pyrazolo[4,3-D]Pyrimidine (8Ci,9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods (NMR, IR, MS), to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed specifications are provided for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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