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)

117 Products Returned

  Product name
  Fluorophore/Label
  Excitation
  Emission
  Extinction Coefficient
  Cat #
  Size List Price (USD) Qty
APEX™ Alexa Fluor® 488 Antibody Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10468 1 kit 389.00
APEX™ Alexa Fluor® 555 Antibody Labeling Kit Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A10470 1 kit 389.00
APEX™ Alexa Fluor® 594 Antibody Labeling Kit Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A10474 1 kit 389.00
APEX™ Alexa Fluor® 647 Antibody Labeling Kit Alexa Fluor 647 651 nm 672 nm 270,000 cm-1M-1 A10475 1 kit 389.00
ARES™ Alexa Fluor® 488 DNA Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A21665 1 kit 362.00
ARES™ Alexa Fluor® 546 DNA Labeling Kit Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A21667 1 kit 362.00
ARES™ Alexa Fluor® 555 DNA Labeling Kit Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A21677 1 kit 362.00
ARES™ Alexa Fluor® 594 DNA Labeling Kit Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A21669 1 kit 362.00
ARES™ Alexa Fluor® 647 DNA Labeling Kit Alexa Fluor 647 651 nm 672 nm 270,000 cm-1M-1 A21676 1 kit 362.00
Alexa Fluor® 350 C5 maleimide Alexa Fluor 350 346 nm 442 nm 17,000 cm-1M-1 A30505 1 mg 245.00
Alexa Fluor® 350 Monoclonal Antibody Labeling Kit Alexa Fluor 350 346 nm 442 nm 19,000 cm-1M-1 (methanol) A20180 1 kit 407.00
Alexa Fluor® 350 Protein Labeling Kit Alexa Fluor 350 346 nm 442 nm 19,000 cm-1M-1 A10170 1 kit 394.00
Alexa Fluor® 350 cadaverine Alexa Fluor 350 346 nm 442 nm 20,000 cm-1M-1 A30674 1 mg Contact Us
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® 350, SE Alexa Fluor 350 346 nm 442 nm 19,000 cm-1M-1 A10168 5 mg 214.00
Alexa Fluor® 405 cadaverine Alexa Fluor 405 399 nm 422 nm 29,000 cm-1M-1 A30675 1 mg 231.00
Alexa Fluor® 405, SE Alexa Fluor 405 400 nm 424 nm 35,000 cm-1M-1 (methanol) A30100 5 mg 1,058.00
Alexa Fluor® 405, SE Alexa Fluor 405 400 nm 424 nm 35,000 cm-1M-1 (methanol) A30000 1 mg 292.00
Alexa Fluor® 430 Protein Labeling Kit Alexa Fluor 430 433nm 539 nm 15,000 cm-1M-1 A10171 1 kit 472.00
Alexa Fluor® 430, SE Alexa Fluor 430 433nm 539 nm 15,000 cm-1M-1 A10169 5 mg 214.00
Alexa Fluor® 488 5-SDPE Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A30052 1 mg 275.00
Alexa Fluor® 488 5-TFPE Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A30005 1 mg 269.00
Alexa Fluor® 488 C5 maleimide Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10254 1 mg 245.00
Alexa Fluor® 488 Decapack Set Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A32750 1 set 189.00
Alexa Fluor® 488 Microscale Protein Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A30006 1 kit 411.00
Alexa Fluor® 488 Monoclonal Antibody Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A20181 1 kit 407.00
Alexa Fluor® 488 Oligonucleotide Amine Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A20191 1 kit 384.00
Alexa Fluor® 488 Protein Labeling Kit Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10235 1 kit 394.00
Alexa Fluor® 488 alkyne Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10267 0.5 mg 358.00
Alexa Fluor® 488 azide Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10266 0.5 mg 358.00
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® 488, SE Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A20000 1 mg 269.00
Alexa Fluor® 488, SE Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A20100 5 mg 1,058.00
Alexa Fluor® 514, SE Alexa Fluor 514 518 nm 540 nm 80,000 cm-1M-1 A30002 1 mg 269.00
Alexa Fluor® 532 C5 maleimide Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A10255 1 mg 245.00
Alexa Fluor® 532 Monoclonal Antibody Labeling Kit Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A20182 1 kit 407.00
Alexa Fluor® 532 Protein Labeling Kit Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A10236 1 kit 423.00
Alexa Fluor® 532, SE Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A20001 1 mg 269.00
Alexa Fluor® 532, SE Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A20101MP 5 mg 1,058.00
Alexa Fluor® 546 C5 maleimide Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A10258 1 mg 245.00
Alexa Fluor® 546 Monoclonal Antibody Labeling Kit Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A20183 1 kit 407.00
Alexa Fluor® 546 Protein Labeling Kit Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A10237 1 kit 394.00
Alexa Fluor® 546, SE Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A20102 5 mg 1,058.00
Alexa Fluor® 546, SE Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A20002 1 mg 269.00
Alexa Fluor® 555 C2 maleimide Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A20346 1 mg 245.00
Alexa Fluor® 555 Decapack Set Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A32756 1 set 195.30
Alexa Fluor® 555 Microscale Protein Labeling Kit Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A30007 1 kit 411.00