Description

4-Mercaptopyrazolo[3,4-d]pyrimidine is a high-purity heterocyclic building block containing both pyrazolopyrimidine and thiol functional groups. This compound is valued for its role as a versatile synthetic intermediate in advanced organic chemistry and pharmaceutical research. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of nucleoside analogs, kinase inhibitors, and other biologically active heterocycles.
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Chemical Biology Probe: Serves as a scaffold for developing enzyme inhibitors and molecular probes due to its thiol reactivity.
• Material Science: Potential building block for organic semiconductors and ligands in catalytic systems.
• Academic & Contract Research: Essential for methodological development and discovery chemistry in university and CRO laboratories.

Basic Information

Product Name	4-Mercaptopyrazolo[3,4-d]pyrimidine
CAS No.	5334-23-6
Molecular Formula	C5H4N4S
Molecular Weight	152.18 g/mol
Synonyms	4-Thioxo-3,4-dihydro-1H-pyrazolo[3,4-d]pyrimidine; 1H-Pyrazolo[3,4-d]pyrimidine-4-thiol; 4-Mercapto-1H-pyrazolo[3,4-d]pyrimidine; 4-Pyrazolopyrimidinethiol; 5334-23-6; 4-Thioxo-1,4-dihydropyrazolo[3,4-d]pyrimidine
EINECS	226-242-9

Quality Control

Our 4-Mercaptopyrazolo[3,4-d]pyrimidine is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing including HPLC for purity, NMR and IR for structural confirmation, and residual solvent analysis. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided with each shipment to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to handle under an inert atmosphere for long-term storage of opened containers. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
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.