Fluorescent Dyes  >  FRET Probes
Fluorescence resonance energy transfer (FRET) is transfer of the excited state energy from the initially excited donor (D) to an acceptor (A). The donor molecules typically emit at shorter wavelengths that overlap with the absorption of acceptors. The process is a distance-dependent interaction between the electronic excited states of two molecules without emission of a photon. FRET is the result of long-range dipole-dipole interactions between the donor and acceptor. Excited donor molecule has several routes to release its captured energy returning to the ground state. The excited state energy can be dissipated to the environment (as light or heat) or transferred directly to a second acceptor molecule, sending the acceptor to an excited state. The latter process is called FRET.

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 Product Size Catalog # US$  
QXL® 490 acid 10 mg 81825-10 $374
QXL® 490 acid, SE
QXL® 490 acid, NHS ester
5 mg 81826-5 $193
QXL®490 C2 amine 5 mg 81828-5 $247
QXL®490 C2 maleimide 5 mg 81827-5 $247
QXL®570 acid 10 mg 81835-10 $374
QXL®570 acid, SE
QXL® 570 acid, NHS ester
5 mg 81836-5 $374
QXL® 570 C2 amine 5 mg 81837 $501
QXL® 570 C2 maleimide 5 mg 81838 $450
QXL® 570 hydrazide 5 mg 81848 $501
QXL® 610 acid 10 mg 81815-10 $374
QXL® 610 acid, SE
QXL® 610 acid, NHS ester
5 mg 81816-5 $193
QXL® 610 vinyl sulfone *Thiol - Reactive* 25 mg 81817 $247
QXL® 670 acid, SE
QXL® 670 acid, NHS ester
5 mg 81841 $374
QXL® 670 C2 amine 5 mg 81842 $374
QXL® 680 acid 10 mg 81855 $374
QXL® 680 acid, SE
QXL® 680 acid, NHS ester
5 mg 81851 $374
QXL® 680 C2 amine 1 mg 81852 $374
QXL® 680 C2 maleimide 1 mg 81854 $374
DABCYL acid
[4 - ((4 - (dimethylamino)phenyl)azo)benzoic acid] *UltraPure Grade*
1 g 81800 $66
DABCYL acid, SE
4 - ((4 - (dimethylamino)phenyl)azo)benzoic acid, succinimidyl ester; DABCYL acid, NHS ester
100 mg 81801 $88
DABCYL C2 amine 100 mg 81819 $121
DABCYL C2 maleimide 25 mg 81802 $121
DABCYL hydrazide 100 mg 81820 $121
DABCYL Plus™ acid 100 mg 81803 $121
DABCYL Plus™ acid, SE
DABCYL Plus™ acid, NHS ester
25 mg 81804 $121
DABCYL Plus™ C2 maleimide 10 mg 81805 $121
DABSYL - L - methionine 25 mg 81811 $66
DNP - X acid
[6 - (2,4 - Dinitrophenyl)aminohexanoic acid]
100 mg 81227 $66
DNP - X acid, SE
6 - (2,4 - Dinitrophenyl)aminohexanoic acid, succinimidyl ester; DNP - X acid, NHS ester
25 mg 81228 $66
DNP C2 maleimide 25 mg 81822 $66
Fmoc - Lys(DABCYL) - OH
N - α - Fmoc - N - ε - (4,4 - dimethylazobenzene - 4’carbonyl) - L - lysine
100 mg 23496-01 $115
Boc - Lys(DABCYL) - OH
N - α - t - Boc - N - ε - (4,4 - dimethylazobenzene - 4’ - carbonyl) - L - lysine
100 mg 23490-01 $115
Fmoc - Lys(DABCYL) Wang resin
N - α - Fmoc - N - ε - 4 - (4 - dimethylaminophenylazo)benzoyl - L - lysine Wang resin
0.5 g 23858 $303
Fmoc - Lys(DABCYL) Wang resin
N - α - Fmoc - N - ε - 4 - (4 - dimethylaminophenylazo)benzoyl - L - lysine Wang resin
1 g 23859 $517
Boc - Lys(DABCYL) - OH
N - α - t - Boc - N - ε - (4,4 - dimethylazobenzene - 4’ - carbonyl) - L - lysine
1 g 23490 $665
Boc - Lys(DABCYL) - OH
N - α - t - Boc - N - ε - (4,4 - dimethylazobenzene - 4’ - carbonyl) - L - lysine
5 g 23491 $2662
Fmoc - Lys(DABCYL) - OH
N - α - Fmoc - N - ε - (4,4 - dimethylazobenzene - 4’carbonyl) - L - lysine
1 g 23496 $665
Fmoc - Lys(DABCYL) - OH
N - α - Fmoc - N - ε - (4,4 - dimethylazobenzene - 4’carbonyl) - L - lysine
5 g 23497 $2662
DABCYL
4,4 - Dimethylamino - azobenzene - 4' - carboxylic acid
0.5 g 23884 $39
DABCYL
4,4 - Dimethylamino - azobenzene - 4' - carboxylic acid
1 g 23885 $66
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