Description

Topostin B is a high-purity, synthetic chemical compound identified by CAS No. 126603-04-1. This compound is valued for its specific biological activity and serves as a critical intermediate in advanced pharmaceutical research and development. It is primarily utilized by research institutions and pharmaceutical companies engaged in the discovery and synthesis of novel therapeutic agents.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of investigational drugs targeting specific biological pathways.
• Biochemical Research: Used as a reference standard or active agent in enzymatic and cellular assays to study biological mechanisms.
• Preclinical Development: Employed in the formulation and testing of potential drug candidates during early-stage development.
• Life Science Reagent: Serves as a specialized reagent for proteomics and molecular biology research applications.

Basic Information

Product Name	Topostin B
CAS No.	126603-04-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Topostin B; 126603-04-1; 7H-Pyrrolo[2,3-d]pyrimidin-7-one, 2,4-dihydro-2-(phenylmethyl)-; 2-Benzyl-2,4-dihydro-7H-pyrrolo[2,3-d]pyrimidin-7-one; Benzyl Topostin B; Topoisomerase inhibitor B
EINECS	Contact for details

Quality Control

Our Topostin B is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (by HPLC), related substances, and residual solvents is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at a controlled room temperature (15-25°C). This product is light-sensitive and easily oxidized; prolonged exposure to air or light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residual Solvents (GC)	Complies with ICH guidelines
Loss on Drying	≤ 0.5%

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