Labeling Chemistry Selection Tool

Welcome to the Labeling Chemistry Selection Tool featuring Molecular Probes® reagents and labeling technologies! Quickly find the best reactive dye or label for your experiment. Whether you are labeling proteins and antibodies for immunofluorescence, nucleic acids for in situ hybridization, or lipids for membrane studies, this tool will help you find the right conjugation product.

Here are a few definitions to help you get started:

Reactivity - this filter refers to the chemical group on the molecule you want to label (i.e. your antibody, protein or DNA)

Reactive Moiety - this filter refers to the chemical group on the dye or label you want to attach to your molecule (i.e fluorescein isothiocyanate, Alexa Fluor® 488 malemide)

19 Products Returned

  Product name
  Fluorophore/Label
  Excitation
  Emission
  Extinction Coefficient
  Cat #
  Size List Price (USD) Qty
Alexa Fluor® 350 cadaverine Alexa Fluor 350 346 nm 442 nm 20,000 cm-1M-1 A30674 1 mg 231.00
Alexa Fluor® 350 hydrazide Alexa Fluor 350 346 nm 442 nm 13,000 cm-1M-1 A10439 5 mg 226.00
Alexa Fluor® 350 hydroxylamine Alexa Fluor 350 346 nm 442 nm 20,000 cm-1M-1 A30627 1 mg 800.00
Alexa Fluor® 405 cadaverine Alexa Fluor 405 399 nm 422 nm 29,000 cm-1M-1 A30675 1 mg 231.00
Alexa Fluor® 488 cadaverine Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A30676 1 mg 231.00
Alexa Fluor® 488 hydrazide Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10436 1 mg 226.00
Alexa Fluor® 488 hydroxylamine Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A30629 1 mg 800.00
Alexa Fluor® 555 cadaverine Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A30677 1 mg 231.00
Alexa Fluor® 555 hydrazide Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A20501MP 1 mg 226.00
Alexa Fluor® 568 cadaverine Alexa Fluor 568 578 nm 603 nm 93,000 cm-1M-1 A30680 1 mg 231.00
Alexa Fluor® 568 hydrazide Alexa Fluor 568 576nm 599 nm 86,000 cm-1M-1 A10437 1 mg 226.00
Alexa Fluor® 568 hydrazide, *10 mM in 200 mM KCl* Alexa Fluor 568 576nm 599 nm 86,000 cm-1M-1 A10441 125 µl 226.00
Alexa Fluor® 594 cadaverine Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A30678 1 mg 231.00
Alexa Fluor® 594 hydrazide Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A10438 1 mg 226.00
Alexa Fluor® 594 hydrazide, *10 mM in 200 mM KCl* Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A10442 125 µl 225.00
Alexa Fluor® 633 hydrazide Alexa Fluor 633 624 nm 643 nm 110,000 cm-1M-1 A30634 1 mg 226.00
Alexa Fluor® 647 cadaverine, Alexa Fluor 647 651 nm 672 nm 250,000 cm-1M-1 A30679 1 mg 231.00
Alexa Fluor® 647 hydrazide Alexa Fluor 647 651 nm 672 nm 250,000 cm-1M-1 A20502 1 mg 225.00
Alexa Fluor® 647 hydroxylamine Alexa Fluor 647 651 nm 672 nm 250,000 cm-1M-1 A30632 1 mg 800.00