Description

Lds-751 is a specialized near-infrared fluorescent dye with the CAS registry number 76433-29-9, widely recognized for its excellent photostability and high quantum yield. This compound is critical for advanced research and development requiring deep-tissue imaging and low-background detection. It is an essential tool for scientists and engineers in the fields of biomedical research, flow cytometry, and material science who require reliable and sensitive fluorescent markers.

Application

• Flow Cytometry & Cell Sorting: Used as a far-red to near-infrared fluorescent probe for multiplexed analysis and cell viability assays.
• Biological Imaging & Microscopy: Employed in deep-tissue and in vivo imaging applications due to its favorable excitation and emission profiles in the NIR region.
• Laser Dye & Photonics: Serves as a gain medium in tunable dye lasers and for research in photophysical properties.
• Bioconjugation & Probe Development: Acts as a key component for labeling antibodies, proteins, and nanoparticles for diagnostic assays.
• Material Science Research: Utilized in the development of organic light-emitting diodes (OLEDs) and sensor materials.
• Academic & Industrial R&D: A fundamental research chemical for studying energy transfer, solvent effects, and new spectroscopic methods.

Basic Information

Product Name	Lds-751
CAS No.	76433-29-9
Molecular Formula	C25H27N2
Molecular Weight	355.50 g/mol
Synonyms	LDS 751; LDS-751; Styryl 751; 2-[4-(4-Dimethylaminophenyl)-1,3-butadienyl]-1-ethylpyridinium Perchlorate; 1-Ethyl-2-[4-(4-dimethylaminophenyl)-1,3-butadienyl]pyridinium Perchlorate; LDS751; LDS 751 dye; Near-IR fluorescent dye LDS 751
EINECS	Contact for details

Quality Control

Every batch of Lds-751 is manufactured and tested under strict quality management systems to ensure high purity, batch-to-batch consistency, and performance reliability. Our products undergo rigorous quality testing, including HPLC for purity and spectroscopic analysis for identity confirmation, to ensure compliance with research-grade standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This product is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 1.0 %
Absorption (λmax in Methanol)	543 nm, 590 nm
Emission (λmax in Methanol)	712 nm

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