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LDS 751 *CAS 181885-68-7*

LDS 751 is a fluorescent cell-permeant nucleic acid stain that can be well excited with 488 nm laser line although it has a peak excitation at ~543 nm on dsDNA. It might be an alternative to DRAQ 5™, useful in multicolor analyses due to its long wavelength emission maximum (~712 nm). Upon binding to dsDNA of LDS 751 has ~20-fold fluorescence enhancement. It has been reported that LDS-751 is excluded from the nucleus and binds the polarized membranes of mitochondria. Thus cautions need be taken when LDS 751 is used for analyzing live cells and LDS-751 fluorescence as being indicative of nuclear status. Thiazole orange (an RNA dye) and LDS-751 (a DNA dye) composition has been used to separate reticulocytes from other cell populations. LDS 751 has been also used to separate red blood cells from nucleated cells.
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Physical properties
Molecular weight471.98
SolventDMSO
Spectral properties
Excitation (nm)561
Emission (nm)712
Storage, safety and handling
Certificate of OriginDownload PDF
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC41116134
CAS181885-68-7
Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of LDS 751 *CAS 181885-68-7* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM211.873 µL1.059 mL2.119 mL10.594 mL21.187 mL
5 mM42.375 µL211.873 µL423.747 µL2.119 mL4.237 mL
10 mM21.187 µL105.937 µL211.873 µL1.059 mL2.119 mL

Molarity calculator

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Spectrum
Product family
NameExcitation (nm)Emission (nm)
LDS 651557630
References
View all 29 references: Citation Explorer
Interaction of LDS-751 with the drug-binding site of P-glycoprotein: a Trp fluorescence steady-state and lifetime study
Authors: Lugo MR, Sharom FJ.
Journal: Arch Biochem Biophys (2009): 17
Hybridization-sensitive fluorescent probe for long-term monitoring of intracellular RNA
Authors: Kubota T, Ikeda S, Yanagisawa H, Yuki M, Okamoto A.
Journal: Bioconjug Chem (2009): 1256
Exciton-controlled fluorescence: application to hybridization-sensitive fluorescent DNA probe
Authors: Okamoto A, Ikeda S, Kubota T, Yuki M, Yanagisawa H.
Journal: Nucleic Acids Symp Ser (Oxf) (2009): 49
Flow cytometric assessment of homeostatic aging of reticulocytes in rats
Authors: Wiczling P, Krzyzanski W.
Journal: Exp Hematol (2008): 119
Comparison of sample fixation and the use of LDS-751 or anti-CD45 for leukocyte identification in mouse whole blood for flow cytometry
Authors: Maes ML, Davidson LB, McDonagh PF, Ritter LS.
Journal: J Immunol Methods (2007): 79