Description

Bis-Biotin-Peg23 CAS NO 293298-36-9 is a high-purity, long-chain polyethylene glycol (PEG) derivative featuring two biotin moieties, designed for advanced bioconjugation and molecular tethering applications. This compound is critical for researchers and manufacturers requiring precise, high-affinity binding systems, particularly in diagnostic assay development and targeted drug delivery platforms. It is primarily utilized in the pharmaceutical, biotechnology, and life science research sectors for creating stable, multi-valent linkages with streptavidin or avidin.

Application

• Development of diagnostic kits and immunoassays (e.g., ELISA) utilizing biotin-streptavidin amplification systems.
• Construction of targeted therapeutic conjugates, including antibody-drug conjugates (ADCs) and nanoparticle drug delivery systems.
• Surface functionalization and bio-immobilization for biosensors, microarrays, and chromatography media.
• As a versatile crosslinking reagent or spacer arm in protein-protein and protein-small molecule interaction studies.
• Tool compound in proteomics and pull-down assays for isolating and studying protein complexes.
• Component in the synthesis of advanced biomaterials and hydrogels for tissue engineering.

Basic Information

Item	Detail
Product Name	Bis-Biotin-Peg23
CAS No.	293298-36-9
Molecular Formula	C86H150N8O30S2
Molecular Weight	~1832.3 g/mol
Synonyms	Bis-Biotin-PEG23; Biotin-PEG23-Biotin; PEG23-Bis-Biotin; 1,1'-[1,14-Dioxo-3,6,9,12-tetraoxatetradecane-1,14-diyl]bis(5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanamide); Poly(ethylene glycol) bis(biotin) derivative (n~23); Biotin-PEG~1000-Biotin; Biotinylated PEG linker
EINECS	Contact for details

Quality Control

Our Bis-Biotin-Peg23 is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (NMR, MS), to ensure it meets the high standards required for sensitive research and development applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a dry environment. This product is hygroscopic (moisture-sensitive). Allow the vial to warm to room temperature in a desiccator before opening to minimize moisture absorption.

Specification

Item	Specification
Appearance	White to off-white solid or powder
Identification (HPLC/MS)	Conforms to structure
Purity (HPLC)	≥ 95%
Water Content (KF)	≤ 1.0%
Molecular Weight Confirmation (MS)	Conforms

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