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Fluorescent probes

Explore fluorescent probes for imaging, labeling, tracking, and assay readouts across biological workflows. Compare probes that support detection in cells, biomolecules, and analytical systems.

Browse by type, application, or key specifications such as purity, grade, packaging, and handling requirements.

3,330 products
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  1. Rhodamine 123
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    Rhodamine 123
    CAS: 62669-70-9 EC Number: 263-687-8 Formula: C21H17ClN2O3 Molecular Weight: 380.82
    ≥98%
    In Stock Item #: R299309
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    methyl 2-(3-amino-6-iminoxanthen-9-yl)benzoate;hydrochloride
    SMILES
    COC(=O)C1=CC=CC=C1C2=C3C=CC(=N)C=C3OC4=C2C=CC(=C4)N.Cl
    InChIKey
    MYFATKRONKHHQL-UHFFFAOYSA-N
    InChI
    1S/C21H16N2O3.ClH/c1-25-21(24)15-5-3-2-4-14(15)20-16-8-6-12(22)10-18(16)26-19-11-13(23)7-9-17(19)20;/h2-11,22H,23H2,1H3;1H
    Synonyms
    SCHEMBL3808879 | RH-123; R-22420 | RH-123 | rhodamine 110 methyl ester | Rhodamine 123, BioReagent, for fluorescence,...
  2. Lumiflavine
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    Lumiflavine
    CAS: 1088-56-8 EC Number: 214-125-5 Formula: C13H12N4O2 Molecular Weight: 256.26
    Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%
    Out of Stock Item #: L338492
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    7,8,10-trimethylbenzo[g]pteridine-2,4-dione
    SMILES
    CC1=CC2=C(C=C1C)N(C3=NC(=O)NC(=O)C3=N2)C
    InChIKey
    KPDQZGKJTJRBGU-UHFFFAOYSA-N
    InChI
    1S/C13H12N4O2/c1-6-4-8-9(5-7(6)2)17(3)11-10(14-8)12(18)16-13(19)15-11/h4-5H,1-3H3,(H,16,18,19)
    Synonyms
    7,8,10-trimethyl-2H,3H,4H,10H-benzo[g]pteridine-2,4-dione | 7,8,10-Trimethylbenzo(g)pteridine-2,4,(3H,10H)-dione | BE...
  3. Coumarin 102
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    Coumarin 102
    CAS: 41267-76-9 Formula: C16H17NO2 Molecular Weight: 255.32
    ≥97%(HPLC)(N)
    In Stock Item #: C153961
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    6-methyl-3-oxa-13-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1(17),2(7),5,8-tetraen-4-one
    SMILES
    CC1=CC(=O)OC2=C1C=C3CCCN4C3=C2CCC4
    InChIKey
    XHXMPURWMSJENN-UHFFFAOYSA-N
    InChI
    1S/C16H17NO2/c1-10-8-14(18)19-16-12-5-3-7-17-6-2-4-11(15(12)17)9-13(10)16/h8-9H,2-7H2,1H3
    Synonyms
    2,3,6,7-Tetrahydro-9-methyl-1H,5H,11H-[1]benzopyrano[6,7,8-ij]quinolizin-11-one | 1H,11H-[1]Benzopyrano[6,7,8-ij]quin...
  4. ZnAF-2 DA - ≥90%, used for , CAS No. 357339-96-9, by Aladdin Scientific
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    ZnAF-2 DA
    CAS: 357339-96-9 PubChem CID: 16760714 Formula: C38H32N4O7 Molecular Weight: 656.7
    ≥90%
    In Stock Item #: Z275826
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    [6'-acetyloxy-6-[2-[bis(pyridin-2-ylmethyl)amino]ethylamino]-3-oxospiro[2-benzofuran-1,9'-xanthene]-3'-yl] acetate
    SMILES
    CC(=O)OC1=CC2=C(C=C1)C3(C4=C(O2)C=C(C=C4)OC(=O)C)C5=C(C=CC(=C5)NCCN(CC6=CC=CC=N6)CC7=CC=CC=N7)C(=O)O3
    InChIKey
    QRHJESKPYRPLIW-UHFFFAOYSA-N
    InChI
    1S/C38H32N4O7/c1-24(43)46-29-10-13-32-35(20-29)48-36-21-30(47-25(2)44)11-14-33(36)38(32)34-19-26(9-12-31(34)37(45)49-38)41-17-18-42(22-27-7-3-5-15-39-show more
    Synonyms
    MFCD08702725 | [6'-acetyloxy-6-[2-[bis(pyridin-2-ylmethyl)amino]ethylamino]-3-oxospiro[2-benzofuran-1,9'-xanthene]-3'...
  5. Zinpyr-1 - ≥95%, used for , CAS No. 288574-78-7, by Aladdin Scientific
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    Zinpyr-1
    CAS: 288574-78-7 Formula: C46H36Cl2N6O5 Molecular Weight: 823.72
    ≥95%
    In Stock Item #: Z276239
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    Pricing & Pack Sizes
    Technical Identifiers
    SMILES
    Oc8c(CN(Cc1ccccn1)Cc2ccccn2)c9Oc5c(CN(Cc3ccccn3)Cc4ccccn4)c(O)c(Cl)cc5C7(OC(=O)c6ccccc67)c9cc8Cl
  6. Zinquin ethyl ester
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    Zinquin ethyl ester
    CAS: 181530-09-6 PubChem CID: 3638243 Formula: C21H22N2O5S Molecular Weight: 414.47
    ≥99%
    In Stock Item #: Z274867
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    ethyl 2-[2-methyl-8-[(4-methylphenyl)sulfonylamino]quinolin-6-yl]oxyacetate
    SMILES
    CCOC(=O)COC1=CC(=C2C(=C1)C=CC(=N2)C)NS(=O)(=O)C3=CC=C(C=C3)C
    InChIKey
    KCASTCXJTDRDFT-UHFFFAOYSA-N
    InChI
    1S/C21H22N2O5S/c1-4-27-20(24)13-28-17-11-16-8-7-15(3)22-21(16)19(12-17)23-29(25,26)18-9-5-14(2)6-10-18/h5-12,23H,4,13H2,1-3H3
    Synonyms
    Ethyl 2-[2-methyl-8-[(4-methylphenyl)sulfonylamino]quinolin-6-yl]oxyacetate | Zinquinethylester | FT-0675912 | AKOS02...
  7. Zinc Phthalocyanine - ≥95%(T) CAS No(14320-04-8) by Aladdin Scientific
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    Zinc Phthalocyanine
    CAS: 14320-04-8 EC Number: 238-262-5 PubChem CID: 2735172 Formula: C32H16N8Zn Molecular Weight: 577.92
    ≥95%(T)
    In Stock Item #: Z163005
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    zinc;2,11,20,29,37,39-hexaza-38,40-diazanidanonacyclo[28.6.1.13,10.112,19.121,28.04,9.013,18.022,27.031,36]tetraconta-1,3,5,7,9,11,13,15,17,19(39),20,show more
    SMILES
    C1=CC=C2C(=C1)C3=NC4=NC(=NC5=C6C=CC=CC6=C([N-]5)N=C7C8=CC=CC=C8C(=N7)N=C2[N-]3)C9=CC=CC=C94.[Zn+2]
    InChIKey
    PODBBOVVOGJETB-UHFFFAOYSA-N
    InChI
    1S/C32H16N8.Zn/c1-2-10-18-17(9-1)25-33-26(18)38-28-21-13-5-6-14-22(21)30(35-28)40-32-24-16-8-7-15-23(24)31(36-32)39-29-20-12-4-3-11-19(20)27(34-29)37-show more
    Synonyms
    ZnPc | SR-01000883715-1 | Zinc phthalocyanine | MFCD00041955 | Zinc Phthalocyanine (purified by sublimation) | Phthal...
  8. Leucomalachite Green
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    Leucomalachite Green
    CAS: 129-73-7 EC Number: 204-961-9 Formula: C23H26N2 Molecular Weight: 330.47
    ≥98%
    In Stock Item #: L102032
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    4-[[4-(dimethylamino)phenyl]-phenylmethyl]-N,N-dimethylaniline
    SMILES
    CN(C)C1=CC=C(C=C1)C(C2=CC=CC=C2)C3=CC=C(C=C3)N(C)C
    InChIKey
    WZKXBGJNNCGHIC-UHFFFAOYSA-N
    InChI
    1S/C23H26N2/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4/h5-17,23H,1-4H3
    Synonyms
    LeucoMalachiteGreen | Malachite green leuco base | Malachite green leuco | Leucomalachite green | 4,4'-Bis(dimethylam...
  9. BD140 [for Albumin binding assay]
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    BD140 [for Albumin binding assay]
    CAS: 1201643-08-4 Formula: C21H21BF2N2O Molecular Weight: 366.22
    ≥98%
    In Stock Item #: B152204
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    2,2-difluoro-6-methyl-4-[(E)-2-(4-propoxyphenyl)ethenyl]-3-aza-1-azonia-2-boranuidatricyclo[7.3.0.03,7]dodeca-1(12),4,6,8,10-pentaene
    SMILES
    [B-]1(N2C(=CC(=C2C=C3[N+]1=CC=C3)C)C=CC4=CC=C(C=C4)OCCC)(F)F
    InChIKey
    NDQRWYKJLFZGBK-RMKNXTFCSA-N
    InChI
    1S/C21H21BF2N2O/c1-3-13-27-20-10-7-17(8-11-20)6-9-19-14-16(2)21-15-18-5-4-12-25(18)22(23,24)26(19)21/h4-12,14-15H,3,13H2,1-2H3/b9-6+
    Synonyms
    4,4-Difluoro-1-methyl-3-(4-propoxystyryl)-4-bora-3a,4a-diaza-s-indacene | BYB64308 | E79001 | 2,2-difluoro-6-methyl-4...
  10. PDT disulfonate - ≥97% CAS No(69898-45-9) by Aladdin Scientific
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    PDT disulfonate
    CAS: 69898-45-9 EC Number: 274-196-3 Formula: C20H13N4NaO6S2 Molecular Weight: 492.46
    ≥97%
    In Stock Item #: P113310
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    Technical Identifiers
    IUPAC Name
    sodium;4-[3-pyridin-2-yl-6-(4-sulfophenyl)-1,2,4-triazin-5-yl]benzenesulfonate
    SMILES
    C1=CC=NC(=C1)C2=NC(=C(N=N2)C3=CC=C(C=C3)S(=O)(=O)O)C4=CC=C(C=C4)S(=O)(=O)[O-].[Na+]
    InChIKey
    ZGVNYCXXBQPDPQ-UHFFFAOYSA-M
    InChI
    1S/C20H14N4O6S2.Na/c25-31(26,27)15-8-4-13(5-9-15)18-19(14-6-10-16(11-7-14)32(28,29)30)23-24-20(22-18)17-3-1-2-12-21-17;/h1-12H,(H,25,26,27)(H,28,29,30show more
    Synonyms
    3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4',4''-disulfonic acid sodium salt, BioXtra | Ferrozine sodium | PD130670 |...
  11. C6 NBD Ceramide
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    C6 NBD Ceramide
    CAS: 94885-02-6 Formula: C30H49N5O6 Molecular Weight: 575.74
    Solid ≥98%
    Out of Stock Item #: N130250
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    Technical Identifiers
    IUPAC Name
    N-[(E,2S,3R)-1,3-dihydroxyoctadec-4-en-2-yl]-6-[(4-nitro-2,1,3-benzoxadiazol-7-yl)amino]hexanamide
    SMILES
    CCCCCCCCCCCCCC=CC(C(CO)NC(=O)CCCCCNC1=CC=C(C2=NON=C12)[N+](=O)[O-])O
    InChIKey
    HZIRBXILQRLFIK-VPZZKNKNSA-N
    InChI
    1S/C30H49N5O6/c1-2-3-4-5-6-7-8-9-10-11-12-13-15-18-27(37)25(23-36)32-28(38)19-16-14-17-22-31-24-20-21-26(35(39)40)30-29(24)33-41-34-30/h15,18,20-21,25show more
    Synonyms
    HY-W356116 | 6-((N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino)hexanoyl)sphingosine | N-(NBD-Aminohexanoyl) D-erythro-Sp...
  12. Bis[3,4,6-trichloro-2-(pentyloxycarbonyl)phenyl] Oxalate - >98.0%(HPLC), used for , CAS No. 30431-54-0, by Aladdin Scientific
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    Bis[3,4,6-trichloro-2-(pentyloxycarbonyl)phenyl] Oxalate(CPPO)
    CAS: 30431-54-0 EC Number: 250-195-3 Formula: C26H24Cl6O8 Molecular Weight: 677.17
    Solid ≥98%(HPLC)
    In Stock Item #: B152265
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    bis(3,4,6-trichloro-2-pentoxycarbonylphenyl) oxalate
    SMILES
    CCCCCOC(=O)C1=C(C(=CC(=C1Cl)Cl)Cl)OC(=O)C(=O)OC2=C(C(=C(C=C2Cl)Cl)Cl)C(=O)OCCCCC
    InChIKey
    TZZLVFUOAYMTHA-UHFFFAOYSA-N
    InChI
    1S/C26H24Cl6O8/c1-3-5-7-9-37-23(33)17-19(31)13(27)11-15(29)21(17)39-25(35)26(36)40-22-16(30)12-14(28)20(32)18(22)24(34)38-10-8-6-4-2/h11-12H,3-10H2,1-show more
    Synonyms
    UNII-44594F9XR2 | 96U2K78I3V | EINECS 250-195-3 | AS-73536 | Ethanedioic acid, bis[3,4,6-trichloro-2-[(pentyloxy)carb...
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Fluorescent probes are used to visualize targets, measure biological states, and monitor chemical or cellular events across imaging and assay workflows. Selection often depends on excitation and emission profile, target selectivity, brightness, photostability, cell permeability, compatibility with fixation or live-cell work, and instrument setup. This category is useful when projects require strong optical readouts and careful matching to microscope or plate-reader capabilities. It pairs naturally with stains, photoactivatable tools, and click-labeling workflows.
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  1. Small molecule 2771items
  2. Polymer 170items
  3. Protein 106items
  4. Peptide 99items
  5. Bioreagents/Buffer 62items
  6. Unknown 31items
  7. Oligosaccharide 28items
  8. Antibody conjugate 14items
  9. Kit 13items
  10. Oligonucleotide 7items
  11. Enzyme 6items
  12. Antibody drug conjugate 1item
Excitation (nm)
  1. Blue Laser(488nm) 31items
  2. Yellow-Green Laser(561nm) 13items
  3. Red Laser(633nm) 11items
  4. Green Laser(532nm) 10items
  5. Violet Laser(405nm) 9items
  6. 330nm 7items
  7. Ultraviolet Laser(350nm) 7items
  8. Yellow-Green Laser(594nm) 7items
  9. Red Laser(660nm) 4items
  10. Ultraviolet Laser (355 nm) 3items
  11. 510nm 2items
  12. 344nm 1item
  13. 345-355nm 1item
  14. 492nm 1item
  15. 494 nm 1item
  16. 494nm 1item
  17. 495nm 1item
  18. 504nm 1item
  19. 545nm 1item
  20. 554nm 1item
  21. 555nm 1item
  22. 571nm 1item
  23. 605nm 1item
  24. 675nm 1item
  25. Blue Laser (488 nm) 1item
  26. Red Laser (640 nm) 1item
Emission(nm)
  1. 420nm 7items
  2. 516nm 5items
  3. 575nm 5items
  4. 1010nm 4items
  5. 660nm 4items
  6. 451nm 3items
  7. 517nm 3items
  8. 525nm 3items
  9. 780nm 3items
  10. 420-480nm 2items
  11. 445nm 2items
  12. 478nm 2items
  13. 535 nm 2items
  14. 568nm 2items
  15. 617nm 2items
  16. 670nm 2items
  17. 675nm 2items
  18. 774nm 2items
  19. 412nm 1item
  20. 422nm 1item
  21. 425nm 1item
  22. 441nm 1item
  23. 450nm 1item
  24. 454nm 1item
  25. 460-470nm 1item
  26. 466nm 1item
  27. 475nm 1item
  28. 495nm 1item
  29. 497nm 1item
  30. 498nm 1item
  31. 501nm 1item
  32. 510-550nm 1item
  33. 510nm 1item
  34. 511nm 1item
  35. 514nm 1item
  36. 515nm 1item
  37. 528nm 1item
  38. 542nm 1item
  39. 555nm 1item
  40. 565nm 1item
  41. 580nm 1item
  42. 584nm 1item
  43. 590nm 1item
  44. 591nm 1item
  45. 595nm 1item
  46. 602nm 1item
  47. 603nm 1item
  48. 605nm 1item
  49. 615nm 1item
  50. 618nm 1item
  51. 630nm 1item
  52. 646nm 1item
  53. 648nm 1item
  54. 664nm 1item
  55. 668nm 1item
  56. 672nm 1item
  57. 680nm 1item
  58. 690nm 1item
  59. 691nm 1item
  60. 693nm 1item
  61. 697nm 1item
  62. 700nm 1item
  63. 704nm 1item
  64. 719nm 1item
  65. 730nm 1item
  66. 760nm 1item
  67. 776nm 1item
  68. 782nm 1item
  69. 790nm 1item
Physical Form
  1. Solid 384items
  2. Liquid 63items
  3. Lyophilized 12items
  4. Powder 3items
Purity
  1. ≥98% 293items
  2. ≥95% 208items
  3. ≥99% 144items
  4. ≥97% 92items
  5. ≥90% 65items
  6. ≥98%(HPLC) 63items
  7. ≥95%(HPLC) 52items
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  9. ≥90%(HPLC) 26items
  10. ≥97%(HPLC) 20items
  11. ≥80% 15items
  12. ≥85% 15items
  13. ≥99%(HPLC) 14items
  14. ≥98%(GC) 10items
  15. ≥70% 7items
  16. ≥85%(HPLC) 5items
  17. ≥96%(HPLC) 5items
  18. ≥75% 3items
  19. ≥80%(HPLC) 3items
  20. ≥98%(HPLC)(N) 3items
  21. ≥98%(T) 3items
  22. ≥87% 2items
  23. ≥90%(HPCE) 2items
  24. ≥90%(N) 2items
  25. ≥94% 2items
  26. ≥95%(HPCE) 2items
  27. ≥95%(T) 2items
  28. ≥95%(TLC) 2items
  29. ≥98%(HPLC)(T) 2items
  30. ≥40% 1item
  31. ≥50% 1item
  32. ≥60% 1item
  33. ≥70%(HPLC) 1item
  34. ≥75%(HPLC) 1item
  35. ≥85%(HPCE) 1item
  36. ≥86% 1item
  37. ≥90%(HPLC)(T) 1item
  38. ≥91% 1item
  39. ≥92% 1item
  40. ≥93% 1item
  41. ≥94%(GC) 1item
  42. ≥94%(HPLC) 1item
  43. ≥96.5%(HPLC) 1item
  44. ≥97%(CHN) 1item
  45. ≥97%(GC) 1item
  46. ≥97%(HPCE) 1item
  47. ≥97%(HPLC)(N) 1item
  48. ≥97%(T) 1item
  49. ≥98 atom% D,≥98% 1item
  50. ≥99%(GC) 1item
  51. ≥99%(T) 1item
  52. ≥99.5%(HPLC) 1item
  53. ≥99.9% metals basis 1item
Grade
  1. BioReagent 117items
  2. Biological Stain 70items
  3. for Fluorescence analysis 58items
  4. Indicator 51items
  5. Moligand™ 49items
  6. for Microscopy 41items
  7. AR 39items
  8. Analytical standard 29items
  9. ACS 23items
  10. Ph.Eur. 12items
  11. Suitable for molecular biology 9items
  12. for Cell culture 5items
  13. High-purity 5items
  14. Suitable for Immunofluorescence(IF) 5items
  15. Carrier Free 4items
  16. for conjugation 4items
  17. Sterile 4items
  18. Suitable for electrophoresis 4items
  19. Technical grade 4items
  20. Ultra pure 4items
  21. Validated 4items
  22. Metal indicator 3items
  23. Reagent Grade 3items
  24. EnzymoPure™ 3items
  25. CP 2items
  26. Ex:498nm 2items
  27. laser grade 2items
  28. Native 2items
  29. Ready-to-use 2items
  30. Recombinant 2items
  31. Standard for GC 2items
  32. Suitable for Analysis 2items
  33. Anhydrous Grade 1item
  34. Biochemical 1item
  35. Biotechnology grade 1item
  36. Colorimetry 1item
  37. Em:455nm 1item
  38. Em:470nm 1item
  39. Em:510nm 1item
  40. Em:511nm 1item
  41. Em:517nm 1item
  42. Em:526nm 1item
  43. Em:572nm 1item
  44. Em:576nm 1item
  45. Em:578nm 1item
  46. Em:580nm 1item
  47. Em:613nm 1item
  48. Em:660nm 1item
  49. Em:665nm 1item
  50. Endotoxin Free 1item
  51. Ex:387nm 1item
  52. Ex:404nm 1item
  53. Ex:492nm 1item
  54. Ex:502nm 1item
  55. Ex:552nm 1item
  56. Ex:560nm 1item
  57. Ex:561nm 1item
  58. Ex:595nm 1item
  59. Ex:647nm 1item
  60. Ex:651nm 1item
  61. histological grade 1item
  62. Purifed 1item
  63. Scintillation Pure 1item
  64. Sterile-filtered 1item
  65. Suitable for microbiology 1item
Price
  1. $0.00 - $500.00 2870items
  2. $500.00 - $1,000.00 272items
  3. $1,000.00 - $1,500.00 120items
  4. $1,500.00 - $2,000.00 49items
  5. $2,000.00 - $2,500.00 10items
  6. $2,500.00 - $3,000.00 3items
  7. $3,000.00 - $3,500.00 3items
  8. $3,500.00 - $4,000.00 1item
  9. $6,000.00 - $6,500.00 1item
  10. $6,500.00 - $7,000.00 1item
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