Description

1H-Pyrazolo[4,3-D]Pyrimidine, 5-Chloro-3-Methyl- CAS NO 1208863-75-5 is a high-purity heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a key intermediate for developing novel pharmaceutical agents, particularly in kinase inhibitor research and other targeted therapeutic areas. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, biotechnology, and fine chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of kinase inhibitors and other small-molecule drug candidates.
• Biochemical Research: Used as a scaffold or building block in medicinal chemistry for structure-activity relationship (SAR) studies.
• Agrochemical Development: Serves as a key intermediate in the research and synthesis of novel crop protection agents.
• Material Science: Potential use in the development of organic electronic materials and advanced polymers.
• Contract Research & Manufacturing (CRO/CMO): Supplied to organizations specializing in custom synthesis and process scale-up.
• Academic Research: Utilized in university and institutional labs for heterocyclic chemistry and synthetic methodology development.

Basic Information

Product Name	1H-Pyrazolo[4,3-D]Pyrimidine, 5-Chloro-3-Methyl-
CAS No.	1208863-75-5
Molecular Formula	C7H5ClN4
Molecular Weight	180.59 g/mol
Synonyms	5-Chloro-3-methyl-1H-pyrazolo[4,3-d]pyrimidine; 5-Chloro-3-methyl-7H-pyrazolo[4,3-d]pyrimidine; 5-Chloro-3-methylpyrazolo[4,3-d]pyrimidine; 3-Methyl-5-chloro-1H-pyrazolo[4,3-d]pyrimidine; 5-Chloro-3-methyl-1H-pyrazolo[4,3-d]pyrimidine; 5-Chloro-3-methyl-1,7-dihydropyrazolo[4,3-d]pyrimidine; 1208863-75-5; 5-Chloro-3-methylpyrazolopyrimidine
EINECS	Contact for details

Quality Control

Our 1H-Pyrazolo[4,3-D]Pyrimidine, 5-Chloro-3-Methyl- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure high purity and batch-to-batch consistency suitable for demanding R&D and scale-up applications. Certificates of Analysis (COA) with full analytical data are provided to guarantee traceability and compliance with your specifications.

Storage

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

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC/MS)	Conforms
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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