The 5-Q670 modification incorporates a fluorescent Quasar® 670 dye at the 5’ terminus of an oligonucleotide. 5’ Quasar 670 modified oligonucleotides can be used in a wide array of applications including dual-labeled fluorogenic probes for real-time PCR. Quasar 670 fluorophore is an indocarbocyanine dye which fluoresces in the red region of the visible spectrum and can be effectively quenched by BHQ®-2 dye. It is used as a direct replacement for the Cy™ 5 dye.
Properties:
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Chemical Name:
Quasar® 670
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Formula:
C37H49N3O6P
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Molecular Weight:
662.78
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Absorption Maximum (Lambda Max):
647
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Extinction Coefficient at Lambda max:
187000
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Extinction Coefficient at 260 nm:
2800
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Fluorescence Maximum:
670
Product usage:
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The mass this product adds after conjugation and work-up (the additional mass seen by mass spectrometry) is:
646.77
