Description

Sb 743921 is a specialized organic compound identified by CAS NO 940929-33-9, serving as a high-purity chemical intermediate. Its precise molecular structure makes it a valuable building block for advanced research and development in pharmaceutical and fine chemical synthesis. This product is essential for scientists and manufacturers in the life sciences sector requiring reliable, high-quality intermediates for complex molecular construction.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs) and drug candidates.
• Organic Synthesis Building Block: Used in complex multi-step organic reactions to construct specific molecular frameworks.
• Biochemical Research: Employed in life science research for developing enzyme inhibitors, receptor ligands, or probe molecules.
• Material Science: Potential use in the development of advanced organic materials and functional polymers.
• Agrochemical Development: Serves as an intermediate in the research and synthesis of new crop protection agents.

Basic Information

Product Name	Sb 743921
CAS No.	940929-33-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	SB-743921; SB 743921; 940929-33-9; (S)-5-Chloro-N2-(1-(5-fluoropyrimidin-2-yl)ethyl)-N4-(5-methyl-1H-pyrazol-3-yl)pyrimidine-2,4-diamine (IUPAC); KSP Inhibitor SB-743921; Kinesin Spindle Protein Inhibitor SB-743921; SB743921.
EINECS	Contact for details

Quality Control

Our Sb 743921 is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling via techniques such as HPLC, NMR, and mass spectrometry. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your research and development 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 (typically 15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Purity (HPLC)	≥ 99.0%
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.