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)

85 Products Returned

  Product name
  Fluorophore/Label
  Excitation
  Emission
  Extinction Coefficient
  Cat #
  Size List Price (USD) Qty
1,5-IAEDANS Naphthalene 336 nm 490 nm 5,700 cm-1M-1 I14 100 mg 89.00
4-acetamido-4'-((iodoacetyl)amino) stilbene-2,2'-disulfonic acid Stilbene 329 nm 408 nm 39,000 cm-1M-1 (methanol) A484 25 mg 213.00
4-acetamido-4'-maleimidylstilbene-2, 2'-disulfonic acid Stilbene 322 nm 411 nm 35,000 cm-1M-1 (methanol) A485 25 mg 213.00
5-(bromomethyl)fluorescein Fluorescein 492 nm 515 nm 81,000 cm-1M-1 B1355 10 mg 267.00
5-IAF Fluorescein 492 nm 515 nm 78,000 cm-1M-1 I30451 25 mg 269.00
5-TMRIA Tetramethylrhodamine 543 nm 567 nm 87,000 cm-1M-1 T6006 5 mg 336.00
6-IAF Fluorescein 491 nm 516 nm 82,000 cm-1M-1 I30452 25 mg 269.00
N-(1,10-phenanthrolin-5-yl), IA Phenanthroline P6879 5 mg Contact Us
N-(1-pyrene), IA Pyrene 339 nm 384 nm 26,000 cm-1M-1 (methanol) P29 100 mg 259.00
N-(1-pyrene)maleimide Pyrene 338 nm 375 nm 40,000 cm-1M-1 (methanol) P28 100 mg 174.00
ABD-F) ABD-F 376 nm 510 nm 8,000 cm-1M-1 F6053 10 mg 132.00
Alexa Fluor® 350 C5 maleimide Alexa Fluor 350 346 nm 442 nm 17,000 cm-1M-1 A30505 1 mg 245.00
Alexa Fluor® 488 C5 maleimide Alexa Fluor 488 494 nm 519 nm 73,000 cm-1M-1 A10254 1 mg 245.00
Alexa Fluor® 532 C5 maleimide Alexa Fluor 532 530 nm 555 nm 81,000 cm-1M-1 A10255 1 mg 245.00
Alexa Fluor® 546 C5 maleimide Alexa Fluor 546 554 nm 570 nm 112,000 cm-1M-1 A10258 1 mg 245.00
Alexa Fluor® 555 C2 maleimide Alexa Fluor 555 555 nm 572 nm 155,000 cm-1M-1 A20346 1 mg 245.00
Alexa Fluor® 568 C5 maleimide Alexa Fluor 568 575 nm 600 nm 92,000 cm-1M-1 A20341 1 mg 245.00
Alexa Fluor® 594 C5 maleimide Alexa Fluor 594 590 nm 617 nm 92,000 cm-1M-1 A10256 1 mg 245.00
Alexa Fluor® 633 C5 maleimide Alexa Fluor 633 622 nm 640 nm 143,000 cm-1M-1 A20342 1 mg 246.00
Alexa Fluor® 647 C2 maleimide Alexa Fluor 647 651 nm 672 nm 250,000 cm-1M-1 A20347 1 mg 246.00
Alexa Fluor® 660 C2 maleimide Alexa Fluor 660 668 nm 697 nm 112,000 cm-1M-1 A20343 1 mg 246.00
Alexa Fluor® 680 C2 maleimide Alexa Fluor 680 684 nm 714 nm 175,000 cm-1M-1 A20344 1 mg 246.00
Alexa Fluor® 750 C5-maleimide Alexa Fluor 750 749 nm 782 nm 240,000 cm-1M-1 A30459 1 mg 246.00
BODIPY® 493/503 methyl bromide BODIPY 493/503 500 nm 506 nm 79,000 cm-1M-1 B2103 5 mg 205.00
BODIPY® 499/508 maleimide BODIPY 499/508 499 nm 508 nm 88,000 cm-1M-1 D20350 5 mg Contact Us
BODIPY® 507/545 IA BODIPY 507/545 508 nm 543 nm 69,000 cm-1M-1 D6004 5 mg 231.00
BODIPY® 577/618 maleimide BODIPY 577/618 577 nm 618 nm 60,000 cm-1M-1 D20351 5 mg Contact Us
BODIPY® 630/650 methyl bromide BODIPY 630/650 658 nm 678 nm 73,000 cm-1M-1 B22802 1 mg Contact Us
BODIPY® FL N-(2-aminoethyl)maleimide BODIPY FL 504 nm 510 nm 79,000 cm-1M-1 B10250 5 mg 226.00
BODIPY® FL C1-IA BODIPY FL 502 nm 510 nm 76,000 cm-1M-1 D6003 5 mg 229.00
BODIPY® FL L-cystine BODIPY FL 504 nm 511 nm 132,000 cm-1M-1 B20340 1 mg 108.00
BODIPY® TMR C5-maleimide BODIPY TMR 544 nm 570 nm 60,000 cm-1M-1 B30466 1 mg 189.00
CPM Coumarin 384 nm 469 nm 33,000 cm-1M-1 D346 25 mg 337.00
DABMI DABMI 419 nm none 34000 cm-1M-1 D1521 100 mg 129.00
DACIA Coumarin 376 nm 465 nm 24,000 cm-1M-1 D10252 10 mg Contact Us
DACM Coumarin 383 nm 463 nm 27,000 cm-1M-1 D10251 10 mg 259.00
DCIA Coumarin 384 nm 470 nm 31,000 cm-1M-1 D404 25 mg 337.00
DSB-X™ biotin C2 IA DSB-X Biotin D30753 5 mg Contact Us
DTNB; Ellman's reagent DTNB D8451 10 g 118.00
IAANS Naphthalene 326 nm 462 nm 27,000 cm-1M-1 I7 100 mg 219.00
IANBD amide NBD 478 nm 541 nm 25,000 cm-1M-1 (methanol) D2004 25 mg 210.00
IANBD ester NBD 472 nm 536 nm 23,000 cm-1M-1 (methanol) I9 100 mg 363.00
MDCC Coumarin 419 nm 466 nm 50,000 cm-1M-1 D10253 5 mg 209.00
MIANS Naphthalene 322 nm 417 nm 27,000 cm-1M-1 M8 100 mg Contact Us
Nα-(3-maleimidylpropionyl) biocytin Biotin M1602 25 mg 150.00
NANOGOLD® monomaleimide NANOGOLD N20345 5 × 6 nmol Contact Us
Oregon Green® 488 IA Oregon Green 488 491 nm 516 nm 68,000 cm-1M-1 O6010 5 mg 216.00
Oregon Green® 488 maleimide Oregon Green 488 491 nm 515 nm 81,000 cm-1M-1 O6034 5 mg 219.00
PEAS; AET Crosslinker P6317 10 mg 145.00
PMIA amide Pyrene 341 nm 376 nm 41,000 cm-1M-1 (methanol) P2007MP 25 mg Contact Us