Fluorescein biotin
Ordering information
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Additional ordering information
Telephone | 1-800-990-8053 |
Fax | 1-800-609-2943 |
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International | See distributors |
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Custom size | Inquire |
Shipping | Standard overnight for United States, inquire for international |
Physical properties
Molecular weight | 831.01 |
Solvent | DMSO |
Spectral properties
Absorbance (nm) | 487 |
Correction Factor (260 nm) | 0.32 |
Correction Factor (280 nm) | 0.35 |
Extinction coefficient (cm -1 M -1) | 800001 |
Excitation (nm) | 498 |
Emission (nm) | 517 |
Quantum yield | 0.79001, 0.952 |
Storage, safety and handling
H-phrase | H303, H313, H333 |
Hazard symbol | XN |
Intended use | Research Use Only (RUO) |
R-phrase | R20, R21, R22 |
Storage | Freeze (< -15 °C); Minimize light exposure |
UNSPSC | 12352200 |
Overview | ![]() ![]() |
See also: Biotin and Streptavidin, Fluoresceins
CAS 134759-22-1 | Molecular weight 831.01 | Absorbance (nm) 487 | Correction Factor (260 nm) 0.32 | Correction Factor (280 nm) 0.35 | Extinction coefficient (cm -1 M -1) 800001 | Excitation (nm) 498 | Emission (nm) 517 | Quantum yield 0.79001, 0.952 |
This bifunctional biotin derivative is used for spectrophotometric determination of biotinylation degree. The assay is based on the kinetic analysis of the enhancement of fluorescence of streptavidin/fluorescein biotin complexes in the presence of biotin. The fluorescence enhancement of fluorescein biotin is proportional to the concentration of biotin. Because the assay is amenable for use in small volumes of 5-50 uL or bead-based assays, the detection limits can be extended to the femtomole range. The dynamic aspects allow the assay to be extended to a broader range of applications including its use as an indicator of reagent mixing in laminar-flow assays carried out in microfluidic devices.
Calculators
Common stock solution preparation
Table 1. Volume of DMSO needed to reconstitute specific mass of Fluorescein biotin to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.
0.1 mg | 0.5 mg | 1 mg | 5 mg | 10 mg | |
1 mM | 120.335 µL | 601.677 µL | 1.203 mL | 6.017 mL | 12.034 mL |
5 mM | 24.067 µL | 120.335 µL | 240.671 µL | 1.203 mL | 2.407 mL |
10 mM | 12.034 µL | 60.168 µL | 120.335 µL | 601.677 µL | 1.203 mL |
Molarity calculator
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Spectrum
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Spectral properties
Absorbance (nm) | 487 |
Correction Factor (260 nm) | 0.32 |
Correction Factor (280 nm) | 0.35 |
Extinction coefficient (cm -1 M -1) | 800001 |
Excitation (nm) | 498 |
Emission (nm) | 517 |
Quantum yield | 0.79001, 0.952 |
References
View all 17 references: Citation Explorer
Engineered single-chain dimeric streptavidins with an unexpected strong preference for biotin-4-fluorescein
Authors: Aslan FM, Yu Y, Mohr SC, Cantor CR.
Journal: Proc Natl Acad Sci U S A (2005): 8507
Authors: Aslan FM, Yu Y, Mohr SC, Cantor CR.
Journal: Proc Natl Acad Sci U S A (2005): 8507
Dynamics of fluorescence dequenching of ostrich-quenched fluorescein biotin: a multifunctional quantitative assay for biotin
Authors: Wu Y, Simons PC, Lopez GP, Sklar LA, Bur and a T., undefined
Journal: Anal Biochem (2005): 221
Authors: Wu Y, Simons PC, Lopez GP, Sklar LA, Bur and a T., undefined
Journal: Anal Biochem (2005): 221
Preparation and characterisation of antibody modified gelatin nanoparticles as drug carrier system for uptake in lymphocytes
Authors: Balthasar S, Michaelis K, Dinauer N, von Briesen H, Kreuter J, Langer K.
Journal: Biomaterials (2005): 2723
Authors: Balthasar S, Michaelis K, Dinauer N, von Briesen H, Kreuter J, Langer K.
Journal: Biomaterials (2005): 2723
Electrophoretic behavior of streptavidin complexed to a biotinylated probe: a functional screening assay for biotin-binding proteins
Authors: Humbert N, Zocchi A, Ward TR.
Journal: Electrophoresis (2005): 47
Authors: Humbert N, Zocchi A, Ward TR.
Journal: Electrophoresis (2005): 47
Controlled surface functionalization of silica nanospheres by covalent conjugation reactions and preparation of high density streptavidin nanoparticles
Authors: Schiestel T, Brunner H, Tovar GE.
Journal: J Nanosci Nanotechnol (2004): 504
Authors: Schiestel T, Brunner H, Tovar GE.
Journal: J Nanosci Nanotechnol (2004): 504
Synthesis of adenosine derivatives as transcription initiators and preparation of 5' fluorescein- and biotin-labeled RNA through one-step in vitro transcription
Authors: Huang F, Wang G, Coleman T, Li N.
Journal: Rna (2003): 1562
Authors: Huang F, Wang G, Coleman T, Li N.
Journal: Rna (2003): 1562
A novel intravascular drug delivery method using endothelial biotinylation and avidin-biotin binding
Authors: Hoya K, Guterman LR, Miskolczi L, Hopkins LN.
Journal: Drug Deliv (2001): 215
Authors: Hoya K, Guterman LR, Miskolczi L, Hopkins LN.
Journal: Drug Deliv (2001): 215
Organelle pH studies using targeted avidin and fluorescein-biotin
Authors: Wu MM, Llopis J, Adams S, McCaffery JM, Kulomaa MS, Machen TE, Moore HP, Tsien RY.
Journal: Chem Biol (2000): 197
Authors: Wu MM, Llopis J, Adams S, McCaffery JM, Kulomaa MS, Machen TE, Moore HP, Tsien RY.
Journal: Chem Biol (2000): 197
Accurate measurement of avidin and streptavidin in crude biofluids with a new, optimized biotin-fluorescein conjugate
Authors: Kada G, Falk H, Gruber HJ.
Journal: Biochim Biophys Acta (1999): 33
Authors: Kada G, Falk H, Gruber HJ.
Journal: Biochim Biophys Acta (1999): 33
Rapid estimation of avidin and streptavidin by fluorescence quenching or fluorescence polarization
Authors: Kada G, Kaiser K, Falk H, Gruber HJ.
Journal: Biochim Biophys Acta (1999): 44
Authors: Kada G, Kaiser K, Falk H, Gruber HJ.
Journal: Biochim Biophys Acta (1999): 44