Molecular Probes Alexa Fluor 488 Hydrazide
Alexa Fluor 488 Hydrazide
Manufacturer: Molecular Probes A10436
DescriptionAlexa Fluor 488 Hydrazide is useful as a cell tracer and as a reactive dye for labeling aldehydes or ketones in polysaccharides or glycoproteins. Alexa Fluor 488 is a bright, green fluorescent dye with excitation ideally suited to the 488 nn laser line. Used for stable signal generation in imaging and flow cytometry, Alexa Fluor 488 dye is water soluble and pH-insensitive from pH 4 to pH 10. In addition to reactive dye formulations, we offer Alexa Fluor 488 dye conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates optimized for cellular labeling and detection.
Detailed information about this AlexaFluor Hydrazide:
Cell Tracking and Tracing Applications
Alexa Fluor hydrazides and hydroxlamines are useful as low molecular weight, membrane-impermeant, aldehyde-fixable cell tracers, exhibiting brighter fluorescence and greater photostability than cell tracers derived from other spectrally similar fluorophores. They are easily loaded into cells by microinjection, infusion from patch pipette, or uptake induced by our Influx Pinocytic Cell-Loading Reagent.
Glycoprotein and Polysaccharide Labeling Applications
The Alexa Fluor hydrazides and hydroxlamines are reactive molecules that can be used to add a fluorescent label to biomolecules containing aldehydes or ketones. Aldehydes and ketones can be introduced into polysaccharides and glycoproteins by periodate-mediated oxidation of vicinal diols. Galactose oxidase can also be used to oxidize terminal galactose residues of glycoproteins to aldehydes.
Hydrazide vs Hydroxylamine
Hydrazine derivatives react with ketones and aldehydes to yield relatively stable hydrazones. Hydroxylamine derivatives (aminooxy compounds) react with aldehydes and ketones to yield oximes. Oximes are superior to hydrazones with respect to hydrolytic stability. Both hydrazones and oximes can be reduced with sodium borohydride (NaBH4) to further increase the stability of the linkage.
Learn More About Protein and Antibody Labeling
We offer a wide selection of Molecular Probes antibody and protein labeling kits to fit your starting material and your experimental setup. See our Antibody Labeling kits or use our Labeling Chemistry Selection Tool for other choices. To learn more about our labeling kits, read Kits for Labeling Proteins and Nucleic AcidsSection 1.2 in The Molecular Probes Handbook.
We’ll Make a Custom Conjugate for You
If you can’t find what you’re looking for in our online catalog, we’ll prepare a custom antibody or protein conjugate for you. Our custom conjugation service is efficient and confidential, and we stand by the quality of our work. We are ISO 9001:2000 certified.
DMSO (dimethylsulfoxide) (D12345)
Antibody Conjugate Purification Kit for 0.5-1 mg (A33086)
Antibody Conjugate Purification Kit for 20-50µg (A33087)
Antibody Conjugate Purification kit for 50-100µg (A33088)
|Alexa Fluor™ 488 Hydrazide, 1mg, Orange, Solid, C21H15N4NaO10S2 Molecular Formula, 570.48 Molecular Weight, Alexa Fluor™ 488 Label, Aldehyde, Carboxylic Acid, Ketone Chemical Reactivity, 493/519nm Excitation/Emission Wavelength, Used for Label|
|Alexa Fluor™ 488|
|Alexa Fluor™ 488 Hydrazide|
|HPLC, 98% at 254nm|
|Cell tracing and tracking, labeling chemistry|
|4 to 10|
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For Research Use Only. Not for use in diagnostic procedures.