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)

439 Products Returned

  Product name
  Fluorophore/Label
  Excitation
  Emission
  Extinction Coefficient
  Cat #
  Size List Price (USD) Qty
(5(6)-SFX, SE Fluorescein 494 nm 520 nm 74,000 cm-1M-1 F2181 10 mg 146.00
(5(6)-SFX, SE Fluorescein 494 nm 520 nm 74,000 cm-1M-1 F6129 10 × 1 mg Contact Us
1,5-IAEDANS Naphthalene 336 nm 490 nm 5,700 cm-1M-1 I14 100 mg 94.00
1-pyrenebutanoic acid, SE Pyrene 341 nm 376 nm 43,000 cm-1M-1 (methanol) P130 100 mg 333.00
1-pyrenebutanoic acid, hydrazide Pyrene 341 nm 376 nm 43,000 cm-1M-1 (methanol) P101 100 mg Contact Us
1-pyrenesulfonyl chloride Pyrene 350 nm 380 nm 28,000 cm-1M-1 (methanol) P24 100 mg Contact Us
2,3-diaminonaphthalene Naphthalene 340 nm 377 nm 5,100 cm-1M-1 D7918 100 mg 57.00
2-aminoacridone, hydrochloride Acridone 425 nm 531 nm 5,200 cm-1M-1 A6289 25 mg 182.00
3-amino-3-deoxydigoxigenin hemisuccinamide, SE Digoxygenin A2952 5 mg 236.00
4'-(aminomethyl)fluorescein, hydrochloride Fluorescein 492 nm 516 nm 80,000 cm-1M-1 A1351 25 mg 249.00
4-acetamido-4'-((iodoacetyl)amino) stilbene-2,2'-disulfonic acid Stilbene 329 nm 408 nm 39,000 cm-1M-1 (methanol) A484 25 mg 249.00
4-acetamido-4'-maleimidylstilbene-2, 2'-disulfonic acid Stilbene 322 nm 411 nm 35,000 cm-1M-1 (methanol) A485 25 mg 249.00
4-benzoylbenzoic acid, SE Crosslinker B1577 100 mg Contact Us
5(6)-CR 110, SE Rhodamine Green 504 nm 532 nm 78,000 cm-1M-1 R6107 5 mg 293.00
5(6)-CR 6G, SE Rhodamine 6G 524 nm 554 nm 92,000 cm-1M-1 C6157 5 mg 182.00
5(6)-FAM Fluorescein 492 nm 517 nm 78,000 cm-1M-1 C1904 100 mg Contact Us
5(6)-FAM, SE Fluorescein 495 nm 519 nm 74,000 cm-1M-1 C1311 100 mg 174.00
5(6)-ROX, SE ROX 576 nm 601 nm 80,000 cm-1M-1 C1309 25 mg 267.00
5(6)-TAMRA Tetramethylrhodamine 540 nm 565 nm 95,000 cm-1M-1 C300 100 mg 179.00
5(6)-TAMRA, SE Tetramethylrhodamine 555 nm 580 nm 95,000 cm-1M-1 C1171 25 mg 259.00
5(6)-TAMRA-X, SE Tetramethylrhodamine 543 nm 571 nm 92,000 cm-1M-1 T6105 10 mg 258.00
5(6)-TRITC Tetramethylrhodamine 544 nm 572 nm 84,000 cm-1M-1 T490 10 mg 181.00
5(6)-XRITC X-rhodamine 572 nm 596 nm 92,000 cm-1M-1 X491 10 mg Contact Us
5(6)-carboxyfluorescein Fluorescein 492 nm 517 nm 78,000 cm-1M-1 C194 5 g 161.00
5(6)-carboxynaphthofluorescein Naphthalene 598 nm 668 nm 49,000 cm-1M-1 C652 100 mg Contact Us
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 221.00
5-(bromomethyl)fluorescein Fluorescein 492 nm 515 nm 81,000 cm-1M-1 B1355 10 mg 271.00
5-CR 6G, SE Rhodamine 6G 525 nm 555 nm 108,000 cm-1M-1 C6127 5 mg 374.00
5-DTAF Fluorescein 492 nm 516 nm 83,000 cm-1M-1 D16 100 mg 176.00
5-FAM Fluorescein 492 nm 518 nm 79,000 cm-1M-1 C1359 100 mg 146.00
5-FAM, SE Fluorescein 494 nm 520 nm 78,000 cm-1M-1 C2210 10 mg 223.00
5-IAF Fluorescein 492 nm 515 nm 78,000 cm-1M-1 I30451 25 mg 283.00
5-ROX ROX 567 nm 591 nm 92,000 cm-1M-1 C6124 10 mg 221.00
5-ROX, SE ROX 580 nm 605 nm 78,000 cm-1M-1 C6125 5 mg 297.00
5-SFX, SE Fluorescein 494 nm 521 nm 75,000 cm-1M-1 F6106 5 mg 146.00
5-TAMRA Tetramethylrhodamine 542 nm 568 nm 91,000 cm-1M-1 C6121 10 mg 221.00
5-TAMRA, SE Tetramethylrhodamine 546 nm 579 nm 95,000 cm-1M-1 C2211 5 mg 296.00
5-TMRIA Tetramethylrhodamine 543 nm 567 nm 87,000 cm-1M-1 T6006 5 mg 352.00
5-TRITC; G isomer Tetramethylrhodamine 543 nm 571 nm 99,000 cm-1M-1 T1480 5 mg 166.00
5-fluorescein cadaverine Fluorescein 493 nm 517 nm 82,000 cm-1M-1 A10466 25 mg 300.00
6-CR 6G, SE Rhodamine 6G 524 nm 550 nm 102,000 cm-1M-1 C6128 5 mg Contact Us
6-FAM Fluorescein 492 nm 515 nm 81,000 cm-1M-1 C1360 100 mg 146.00
6-FAM, SE Fluorescein 496 nm 516 nm 83,000 cm-1M-1 C6164 10 mg 221.00
6-IAF Fluorescein 491 nm 516 nm 82,000 cm-1M-1 I30452 25 mg 277.00
6-JOE, SE JOE 520 nm 548 nm 75,000 cm-1M-1 C6171MP 5 mg 286.00
6-ROX ROX 570 nm 590 nm 113 000 cm-1M-1 C6156 10 mg 218.00
6-ROX, SE ROX 575 nm 602 nm 82,000 cm-1M-1 C6126 5 mg 302.00
6-TAMRA Tetramethylrhodamine 540 nm 564 nm 103,000 cm-1M-1 C6122 10 mg 208.00
6-TAMRA, SE Tetramethylrhodamine 547 nm 573 nm 91,000 cm-1M-1 C6123 5 mg 306.00