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)

73 Products Returned

  Product name
  Fluorophore/Label
  Excitation
  Emission
  Extinction Coefficient
  Cat #
  Size List Price (USD) Qty
1-pyrenebutanoic acid, hydrazide Pyrene 341 nm 376 nm 43,000 cm-1M-1 (methanol) P101 100 mg Contact Us
2,3-diaminonaphthalene Naphthalene 340 nm 377 nm 5,100 cm-1M-1 D7918 100 mg 54.00
2-aminoacridone, hydrochloride Acridone 425 nm 531 nm 5,200 cm-1M-1 A6289 25 mg 172.00
4'-(aminomethyl)fluorescein, hydrochloride Fluorescein 492 nm 516 nm 80,000 cm-1M-1 A1351 25 mg 226.00
5-(((2-(carbohydrazino)methyl)thio)acetyl)aminofluorescein Fluorescein 492 nm 516 nm 76,000 cm-1M-1 C356 25 mg Contact Us
5-(aminomethyl)fluorescein, hydrochloride Fluorescein 492 nm 516 nm 68,000 cm-1M-1 A1353 10 mg 211.00
5-fluorescein cadaverine Fluorescein 493 nm 517 nm 82,000 cm-1M-1 A10466 25 mg 289.00
N-methylisatoic anhydride NBD 353 nm 446 nm 5,900 cm-1M-1 M25 1 g 158.00
ANTS Naphthalene 353 nm 520 nm 7,200 cm-1M-1 A350 1 g 315.00
APTS Pyrene 424 nm 505 nm 19,000 cm-1M-1 (methanol) A6257 10 mg 205.00
ARP Biotin A10550 10 mg 214.00
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
BODIPY® FL EDA BODIPY FL 503 nm 510 nm 76,000 cm-1M-1 D2390 5 mg 314.00
BODIPY® FL hydrazide BODIPY FL 503 nm 510 nm 71,000 cm-1M-1 D2371 5 mg 219.00
BODIPY® TR cadaverine BODIPY TR 588 nm 616 nm 64,000 cm-1M-1 D6251 5 mg 232.00
Cascade Blue® ethylenediamine Cascade Blue 399 nm 423 nm 29,000 cm-1M-1 C621 10 mg 209.00
Cascade Blue® hydrazide Cascade Blue 399 nm 419 nm 29,000 cm-1M-1 C3239 10 mg 205.00
Cascade Blue® hydrazide, tripotassium salt Cascade Blue 399 nm 419 nm 31,000 cm-1M-1 C3221 10 mg Contact Us
Cascade Blue® hydrazide, trisodium salt Cascade Blue 399 nm 421 nm 30,000 cm-1M-1 C687 10 mg 209.00
DCCH Coumarin 420 nm 468 nm 46,000 cm-1M-1 D355 25 mg 199.00
DSB-X™ biotin ethylenediamine DSB-X Biotin D30752 1 mg Contact Us
DSB-X™ biotin hydrazide DSB-X Biotin D20653 5 mg Contact Us
Dapoxyl® (2-aminoethyl)sulfonamide Dapoxyl 373 nm 571 nm 23,000 cm-1M-1 (methanol) D10460 10 mg Contact Us
EDANS Naphthalene 335 nm 493 nm 5,900 cm-1M-1 A91 1 g Contact Us
Lissamine™ rhodamine B ethylenediamine Lissamine Rhodamine 561 nm 581 nm 122,000 cm-1M-1 L2424 10 mg 246.00
NBD methylhydrazine NBD 487 nm none 2,400 cm-1M-1 (methanol) M20490 25 mg 178.00
Oregon Green® 488 cadaverine Oregon Green 488 494 nm 521 nm 75,000 cm-1M-1 O10465 5 mg 216.00
QSY® 7 amine QSY7 560 nm none 92000 cm-1M-1 Q10464 5 mg 219.00
Qdot® 525 ITK™ amino (PEG) quantum dots Qdot 525 <500 nm 525 nm 710,000 cm-1M-1 (at 350 nm) Q21541MP 250 µl 520.00
Qdot® 545 ITK™ amino (PEG) quantum dots Qdot 545 <500 nm 545 nm Not Determined Q21591MP 250 µl 520.00
Qdot® 565 ITK™ amino (PEG) quantum dots Qdot 565 <500 nm 565 nm 1,900,000 cm-1M-1 (at 350 nm) Q21531MP 250 µl 520.00
Qdot® 585 ITK™ amino (PEG) quantum dots Qdot 585 <500 nm 585 nm 3,500,000 cm-1M-1 (at 350 nm) Q21511MP 250 µl 520.00