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AzoDye-3 Amine

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Physical properties
Molecular weight816.81
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure


Molecular weight
AzoDye-3 amine is an excellent building block for labeling carbonyl-containing molecules. AzoDye-3 dyes are nearly non-fluorescent with moderate extinction coefficients. These dark quenchers are most typically used in Molecular Beacon probes in which FRET has minimal contribution to their fluorescence quenching, thus dependence on donor-acceptor spectral overlap is not significant as to other FRET probes such as FRET peptides. AzoDye-3 dyes can quench a variety of fluorophores, in particular, fluorescein derivatives such as FAM, HEX, TET, NED and JOE. This may reflect the AzoDye-3's ability to form stable, non-fluorescent complexes with a fluorophore.


Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of AzoDye-3 Amine to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM122.427 µL612.137 µL1.224 mL6.121 mL12.243 mL
5 mM24.485 µL122.427 µL244.855 µL1.224 mL2.449 mL
10 mM12.243 µL61.214 µL122.427 µL612.137 µL1.224 mL

Molarity calculator

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Spectral properties



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