Description

2H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci) is a fused heterocyclic organic compound featuring a triazole ring annulated to a pyrimidine, serving as a versatile and critical building block in advanced chemical synthesis. Its unique bicyclic structure makes it a valuable scaffold for developing novel pharmacologically active molecules and functional materials. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to innovate in drug discovery and material science.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of nucleoside analogs, kinase inhibitors, and other bioactive heterocyclic compounds for drug discovery and development.
• Agrochemical Research: Used as a core structure for creating novel herbicides, fungicides, and plant growth regulators with specific modes of action.
• Material Science: Serves as a building block for constructing organic ligands in coordination chemistry and for developing advanced organic electronic materials.
• Biochemical Probe Development: Employed in medicinal chemistry to create tool compounds and probes for studying enzyme function and biological pathways.
• Academic & Industrial R&D: A fundamental reagent for synthetic organic chemists exploring new reactions and methodologies involving fused nitrogen heterocycles.

Basic Information

Product Name	2H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci)
CAS No.	273-39-2
Molecular Formula	C4H3N5
Molecular Weight	121.10 g/mol
Synonyms	1H-[1,2,3]Triazolo[4,5-d]pyrimidine; [1,2,3]Triazolo[4,5-d]pyrimidine; 1,2,3-Triazolo[4,5-d]pyrimidine; 273-39-2; 2H-[1,2,3]Triazolo[4,5-d]pyrimidine; NSC 51128; s-Triazolo[4,5-d]pyrimidine
EINECS	205-989-6

Quality Control

We supply 2H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci) in high-purity grades suitable for research and commercial synthesis. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.