Description

5H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci) is a high-purity fused heterocyclic compound, serving as a critical building block in advanced organic synthesis. Its unique triazolo-pyrimidine core structure makes it an invaluable intermediate for developing novel pharmaceuticals and agrochemicals. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create new active ingredients with specific biological properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of nucleoside analogs, kinase inhibitors, and other small-molecule drug candidates targeting various diseases.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators due to its bioactive heterocyclic scaffold.
• Chemical Biology & Medicinal Chemistry: Employed as a versatile scaffold for constructing compound libraries in high-throughput screening and structure-activity relationship (SAR) studies.
• Material Science Research: Investigated as a potential component for creating novel organic electronic materials or metal-organic frameworks (MOFs).
• Academic & Industrial R&D: Serves as a fundamental reagent for methodological development in organic synthesis and heterocyclic chemistry.

Basic Information

Product Name	5H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci)
CAS No.	273-38-1
Molecular Formula	C4H3N5
Molecular Weight	121.10 g/mol
Synonyms	5H-[1,2,3]Triazolo[4,5-d]pyrimidine; 1,2,3-Triazolo[4,5-d]pyrimidine; 1H-1,2,3-Triazolo[4,5-d]pyrimidine; 273-38-1; Azolo[4,5-d]pyrimidine; NSC 51143; s-Triazolo[4,5-d]pyrimidine
EINECS	205-989-5

Quality Control

Our 5H-1,2,3-Triazolo[4,5-D]Pyrimidine (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which may affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white 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.