Fluorescent Probes

SETA BioMedicals offers probes for various types of applications:

Some of these specific probes are targeted to measure changes in lipid bilayer hydration of cells, cholesterol and triglycerides content in biological fluids and live/necrotic cell populations. We also offer probes for protein analysis. With quantum yields of 80% and extination cefficients in the order of 180,000 - 210,000 M-1cm-1. Square probes are on of the most sensitive dyes for the quantitative analysis of proteins.

K35 is a hydrophobic fluorescent probe for albumin binding sites in plasma and serum.

YO-Seta-1 (same as YOYO-1) is a high affinity cell-impermeable probe for staining of dsDNA.

Seta-Green is a high affinity, cell-impermeant nucleic acid stain for qPCR similar to SYBR Green-1.

Square-460 is an highly viscosity-sensitive fluorescent probe.

Our fluorescent rotaxane probes SeTau-647 and SeTau-633 exhibit extremely high chemical and photostability and are well suited for  cellular imaging. They also have extremly high 2-photon action cross sections in the order of several thousand GM.

The pH-sensitive probe Square-650-pH is the only probe of its kind which shows lifetime sensitive responses in the physiological pH range. It is well suited for measurements of internal conversion and endocytic events.

Excitation Light Sources Characteristics Characteristics
Product Number
(Specs Sheet)
Product Name
(Product Info)
380 405 436 488 532 594 635 650 680 700 750 780 Medium λ abs
[nm]
ε
[M –1
cm–1]
λ em
[nm]
QY
[%]
FLT
[ns]
Medium λ abs
[nm]
ε
[M–1
cm–1]
λ em
[nm]
QY
[%]
FLT
[ns]
Buy
                             
K35
K35
K35
K35
Toluene 410 10,000 495 60 EtOH 430 13,200 552 0.01
K6-207
K6-207
3-DAB
3-DAB
Toluene 445 9,700 582 43 EtOH 460 8,600 665 22 4.0
K6-208
K6-208
2-DAB
2-DAB
Toluene 464 3,600 551 31 EtOH 480 2,900 670 1.1
K8-1350
K8-1350
Square-670-Carboxy
Square-670-Carboxy
PB 7.4 656 676 1.7 0.29 6g/L BSA 673 693 29
K8-1351
K8-1351
Square-660-Carboxy
Square-660-Carboxy
PB 7.4 657 182,000 676 3 0.27 2g/L BSA 679 182,000 696 45 3.56
K8-1355
K8-1355
Square-680-Carboxy
Square-680-Carboxy
PB 7.4 654 138,000 670 1 1g/L BSA 688 168,000 708 62
K8-1440
K8-1440
Square-670
Square-670
pH 7.4 659 677 0.09 1 g/L BSA 683 702 50
K8-1443
K8-1443
Square-730
Square-730
CHCl3 728 166,000 757 46 1g/L BSA 722 745
K8-1500
K8-1500
Square-655
Square-655
PB 7.4 622 177,000 644 0.09 1 g/L BSA 652 188 672 80
K9-4145
K9-4145
SeTau-633-Ethyl-Ester
SeTau-633-Ethyl-Ester
CHCl3 634 105,000 683 68
K9-4150
K9-4150
SeTau-647
SeTau-647
PB 7.4 647 211,000 693 59 3.1 PB 7.4 647 211,000 693 59 3.1
K8-1402
K8-1402
Square-650
Square-650
CHCl3 654 210,000 671 53
K8-3010
K8-3010
Square-460
Square-460
PB 7.4 467 50,000 515 0.9 6g/L BSA 469 512 8.6
K8-1405
K8-1405
Square-650-pH-Carboxy
Square-650-pH-Carboxy
PB 5.6 653 135,000 671 16 1.17 pH 9.0 535 48,000 663 9 0.53
K8-1610
K8-1610
Square-635-Carboxy
Square-635-Carboxy
pH 7.4 634 180,000 646 9 pH 12.0 520 - - -
K8-1665
K8-1665
Seta-635-pH-di-Carboxy
Seta-635-pH-di-Carboxy
PB 7.4 640 188,000 656 33 1.8 pH 12.0 519 - - -
K8-1365
K8-1365
Seta-670-pH-di-Carboxy
Seta-670-pH-di-Carboxy
PB 6.0 672 93,000 694 19 pH 11.5 535 - - -
K6-1037
K6-1037
K37
K37
Toluene 434 29,500 540 49 Cholesterol in water 540
K8-2100
K8-2100
YOSeta-1 (1mM solution in DMSO)
YOSeta-1 (1mM solution in DMSO)
dsDNA 492 98,800 509 52

 

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