5-DTAF [5-(4,6-Dichlorotriazinyl)aminofluorescein] *CAS 51306-35-5*
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Physical properties
Molecular weight | 495.28 |
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 | 12171501 |
Overview | ![]() ![]() |
See also: Fluoresceins
CAS 51306-35-5 | Molecular weight 495.28 | 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 |
The 5-isomer of fluorescein dichlorotriazine (5-DTAF) is highly reactive with proteins. Unlike other reactive fluoresceins, 5-DTAF not only reacts with amino groups, but also reacts with thiol groups and even directly reacts with hydroxy groups such as polysaccharides and other alcohols in aqueous solution at pH above 9. Due to its high reactivity, 5-DTAF is also used to label carbohydrates.
Calculators
Common stock solution preparation
Table 1. Volume of DMSO needed to reconstitute specific mass of 5-DTAF [5-(4,6-Dichlorotriazinyl)aminofluorescein] *CAS 51306-35-5* 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 | 201.906 µL | 1.01 mL | 2.019 mL | 10.095 mL | 20.191 mL |
5 mM | 40.381 µL | 201.906 µL | 403.812 µL | 2.019 mL | 4.038 mL |
10 mM | 20.191 µL | 100.953 µL | 201.906 µL | 1.01 mL | 2.019 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 |
Product Family
Name | Excitation (nm) | Emission (nm) | Extinction coefficient (cm -1 M -1) | Correction Factor (280 nm) |
5-FAM [5-Carboxyfluorescein] *CAS 76823-03-5* | 493 | 517 | 83000 | 0.178 |
5-SFX [5-FAM-X, SE] *CAS 148356-00-7* | 493 | 517 | 83000 | 0.178 |
5-FITC [Fluorescein-5-isothiocyanate] *CAS 3326-32-7* | 491 | 516 | 73000 | 0.35 |
6-DTAF [6-(4,6-Dichlorotriazinyl)aminofluorescein] *CAS 118357-32-7* | 498 | 517 | 800001 | 0.35 |
5-IAF [5-Iodoacetamidofluorescein] *CAS 63368-54-7* | 498 | 517 | 800001 | 0.35 |
5-CR110 [5-Carboxyrhodamine 110] *Single isomer* | 499 | 525 | 84000 | 0.091 |
5-CR6G [5-Carboxyrhodamine 6G] *Single isomer* | 522 | 546 | 94000 | 0.214 |
5-TAMRA [5-Carboxytetramethylrhodamine] *CAS 91809-66-4* | 552 | 578 | 90000 | 0.178 |
5-ROX [5-Carboxy-X-rhodamine] *CAS 216699-35-3* | 578 | 604 | 82000 | 0.168 |
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Citations
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References
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Redistribution of plasma-membrane surface molecules during formation of the Leishmania amazonensis-containing parasitophorous vacuole
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Application of a tetrazolium dye as an indicator of viability in anaerobic bacteria
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Journal: J Microbiol Methods (1999): 231
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Journal: J Microbiol Methods (1999): 231
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Journal: J Orthop Res (1998): 438
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