Erturb the structure of the DNA helix and it is well tolerated by a number of DNA and RNA polymerases. It is highly fluorescent and its excitation and emission are well to the red of most fluorescent nucleotide analogs, which eliminates or reduces background fluorescence from proteins.
2-Aminopurine (4) is a fluorescent base which has found significant use in probing DNA structures. It is especially useful in that it is capable of hybridizing to T.6 In 2001, Glen Research introduced furano-T (5) as a novel fluorescent nucleoside. It quickly became apparent that furano-T is unstable during cleavage and deprotection steps, but forms another fluorescent nucleoside on treatment with ammonium hydroxide. Mass spec data supported the conclusion that furano-T had been transformed
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Several fluorescent nucleoside analogues have been prepared as phosphoramidites in recent years. Etheno-A (1) and etheno-C (2)1 (Figure 1 on Page 2) are two readily accessible fluorescent structures but these molecules are both non-hybridizing. Other notable fluorescent base analogues are the pteridine nucleoside analogues actively being investigated by Pfleiderer, Hawkins and co-workers. The most promising analogue described to date2 is the adenosine analogue (3) but guanosine and other analogues have also been investigated.3-5

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by ammonium hydroxide in the cleavage and deprotection to the equivalent amino compound, pyrrolo-C (6) (Figure 1). FuranodT-CE Phosphoramidite (7) (Figure 2) was discontinued and Pyrrolo-dC-CE Phosphoramidite (8) (Figure 2), the fluorescent dC analogue, was introduced early in 2002. Pyrrolo-C CE Phosphoramidite (9) (Figure 2) for RNA synthesis has now also been synthesized and we foresee potential applications in RNA structural analysis. Chemistry Pyrrolo-dC is stable to all DNA synthesis cycles and reagents, with the exception of strong iodine oxidizer solutions. Routinely, 0.02M iodine oxidizer solutions are now used and these solutions have no effect on pyrrolo-dC. However, some older instruments and cycles use 0.1M iodine or stronger solutions and these cause degradation of pyrrolo-dC each cycle. These strong iodine solutions should not be used with pyrrolo-dC. Pyrrolo-dC is stable to most cleavage and deprotection conditions, including UltraMild with potassium carbonate in methanol or ammonium hydroxide at room temperature, and regular with ammonium hydroxide, preferably at room temperature. This analogue contrasts with the pyrrolo-dC derivative, lacking only the methyl group, described7 by Epoch researchers, which was unstable to deprotection conditions. They also observed that the non-methylated version of the ring system formed a mismatch with G, which differs from our observations for the pyrrolo-C – G base pair.42424-50-0 manufacturer

The quantum yield of fluorescence for pyrrolo-dC is quite sensitive to its hybridization state, making it ideally suited8,9 for probing the dynamic structure of DNA.1628208-23-0 web Work by Liu and Martin has shown9 that, when the pyrrolo-dC is mismatched in an otherwise duplex hybrid, the fluorescence is higher than the single-stranded species when the mismatched base is adenosine.PMID:28006892 This most likely arises from efficient energy transfer from the adenosine to the pyrrolodC. This unusual behavior also allows differentiation in situ between a DNA-DNA duplex and a DNA-RNA heteroduplex. Biology The quenching of pyrrolo-dC allows local structural changes to be probed with great sensitivity. Using pyrrolo.MedChemExpress (MCE) offers a wide range of high-quality research chemicals and biochemicals (novel life-science reagents, reference compounds and natural compounds) for scientific use. We have professionally experienced and friendly staff to meet your needs. We are a competent and trustworthy partner for your research and scientific projects.Related websites: https://www.medchemexpress.com