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6-TET phosphoramidite [5'-Tetrachlorofluorescein phosphoramidite] *CAS#: 877049-90-6*

There are several ways of labeling an oligonucleotide with fluorescein. The choice of label is diversified further, depending on the spectral requirements. 5'-fluorescein-CE phosphoramidite, derived from the single isomer 6-carboxyfluorescein, 5'-hexachlorofluorescein-CE phosphoramidite (HEX) and 5'-tetrachlorofluorescein-CE phosphoramidite (TET) can all be used to efficiently label an oligonucleotide at the 5'-end. Labeling the 3'-end of an oligo with fluorescein can be achieved using 3'-Fluorescein CPGs. Standard cleavage and deprotection with ammonium hydroxide liberates the fluorescein-labeled oligo when using any of these supports.

Calculators

Common stock solution preparation

Table 1. Volume of MeCN needed to reconstitute specific mass of 6-TET phosphoramidite [5'-Tetrachlorofluorescein phosphoramidite] *CAS#: 877049-90-6* 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 mM101.862 µL509.31 µL1.019 mL5.093 mL10.186 mL
5 mM20.372 µL101.862 µL203.724 µL1.019 mL2.037 mL
10 mM10.186 µL50.931 µL101.862 µL509.31 µL1.019 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

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Spectrum

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Correction Factor (280 nm)
6-TET, SE [6-Carboxy-2',4,7',7-tetrachlorofluorescein, succinimidyl ester]521542730000.13
6-TET azide521542730000.13
6-TET alkyne521542730000.13
6-FAM phosphoramidite [5'-Fluorescein phosphoramidite] *CAS 204697-37-0*493517830000.178
6-Fluorescein phosphoramidite4985178000010.35
6-HEX phosphoramidite [5'-Hexachlorofluorescein phosphoramidite]533559730000.15
6-JOE Phosphoramidite520545750001-
6-TET Acid521542730000.13
6-VIC phosphoramidite526543--

References

View all 13 references: Citation Explorer
Sequence-specific, self-reporting hairpin inversion probes
Authors: Browne KA., undefined
Journal: J Am Chem Soc (2005): 1989
Modified oligonucleotides containing lithocholic acid in their backbones: their enhanced cellular uptake and their mimicking of hairpin structures
Authors: Kim SJ, Bang EK, Kwon HJ, Shim JS, Kim BH.
Journal: Chembiochem (2004): 1517
Synthesis of HyBeacons and dual-labelled probes containing 2'-fluorescent groups for use in genetic analysis
Authors: Dobson N, McDowell DG, French DJ, Brown LJ, Mellor JM, Brown T.
Journal: Chem Commun (Camb) (2003): 1234
Reduced aggregation and improved specificity of G-rich oligodeoxyribonucleotides containing pyrazolo[3,4-d]pyrimidine guanine bases
Authors: Kutyavin IV, Lokhov SG, Afonina IA, Dempcy R, Gall AA, Gorn VV, Lukhtanov E, Metcalf M, Mills A, Reed MW, S and ers S, Shishkina I, Vermeulen NM.
Journal: Nucleic Acids Res (2002): 4952
Diels--Alder bioconjugation of diene-modified oligonucleotides
Authors: Hill KW, Taunton-Rigby J, Carter JD, Kropp E, Vagle K, Pieken W, McGee DP, Husar GM, Leuck M, Anziano DJ, Sebesta DP.
Journal: J Org Chem (2001): 5352
Page updated on October 8, 2024

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Physical properties

Molecular weight

981.72

Solvent

MeCN

Spectral properties

Correction Factor (280 nm)

0.13

Extinction coefficient (cm -1 M -1)

73000

Excitation (nm)

521

Emission (nm)

542

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
UNSPSC12171501

CAS

877049-90-6