The 5-FAM modification incorporates a fluorescent fluorescein (FAM) moiety at the 5' terminus of an oligonucleotide. 5' FAM modified oligonucleotides can be used in a wide array of applications, including dual-labeled fluorogenic probes for real-time PCR. FAM is a xanthene dye and this product is prepared using the 6-carboxy fluorescein isomer. FAM fluoresces in the green region of the visible spectrum and its fluorescence can be effectively quenched by BHQ®-1 dye.
Properties:
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Chemical Name:
FAM
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Formula:
C27H24NO10P
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Molecular Weight:
553.45000000000005
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Absorption Maximum (Lambda Max):
495
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Extinction Coefficient at Lambda max:
71300
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Extinction Coefficient at 260 nm:
26900
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Fluorescence Maximum:
520
Product usage:
-
The mass this product adds after conjugation and work-up (the additional mass seen by mass spectrometry) is:
537.45