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5-Carboxy-2',7'-Dichlorofluorescein (Sin
SKU
51017
Size
100MG
$103
Supplier
Biotium
Descrition & Target
This dye can be used as a low pH indicator similar 5-and-6-Carboxy-2'7'-dichlorofluorescein, and is also useful as a general green fluorescent label. Carboxy-2',7'-dichlorofluorescein is significantly more photostable than carboxyfluorescein.
<ul>
<li>&lamba;<sub>Ex</sub>/&lamba;<sub>Em</sub> = 504/529 nm (pH 8)</li>
<li>ε = 90,000</li>
<li>Yellow solid soluble in DMSO, DMF or basic water (pH >7)</li>
<li>Store at 4°C and protect from light</li>
<li>C<sub>21</sub>H<sub>10</sub>Cl<sub>2</sub>O<sub>7</sub></li>
<li>MW: 445</li>
</ul>
CAS Number
Molecular Weight
Molecular Formula
Tag / Host
Species
Expression
5-Carboxy-2',7'-dichlorosulfonefluorescein (single isomer)
SKU
51023
Size
10MG
$149
Supplier
Biotium
Descrition & Target
The pKa of 5-carboxy-2',7'-dichlorosulfonefluorescein is near 4 and thus the dye is potentially an excellent pH indicator for acidic organelles.
<ul>
<li>&lamba;<sub>Ex</sub>/&lamba; <sub>Em</sub>= 509/532nm (pH 9)</li>
<li>ε = 92,000</li>
<li>Yellow solid soluble in DMSO, DMF or a buffer (pH >6)</li>
<li>Store at 4°C and protect from light</li>
<li>C<sub>20</sub>H<sub>10</sub>Cl<sub>2</sub>O<sub>8</sub>S</li>
<li>MW: 481.26</li>
</ul>
CAS Number
Molecular Weight
Molecular Formula
Tag / Host
Species
Expression
5-Carboxy-X-Rhodamine-PEO8-propionate, succinimidyl ester (5-ROX-PEO8 SE)
SKU
90089
Size
1MG
$125
Supplier
Biotium
Descrition & Target
5-ROX-PEO<sub>8</sub> SE (full name: 5-Carboxy-X-rhodamine-PEO<sub>8</sub>-propionate, succinimidyl ester) has an approximately 32 Angstrom water-soluble PEG spacer that separates the red fluorescent ROX dye and the amine-reactive SE group. <ul> <li>&lamba;<sub>Ex</sub>/&lamba; <sub>Em</sub>(MeOH) = 568/595 nm</li> <li>Dark red solid soluble in DMSO or DMF</li> <li>Store at -20°C and protect from light</li> <li>C<sub>56</sub>H<sub>70</sub>N<sub>4</sub>O<sub>16</sub></li> <li>MW: 1055.17</li> </ul>
CAS Number
Molecular Weight
Molecular Formula
Tag / Host
Species
Expression
5-FAM (5-Carboxyfluorescein)
SKU
51019
Size
100MG
$84
Supplier
Biotium
Descrition & Target
5-FAM (full name: 5-Carboxyfluorescein, single isomer) is the free acid form of 5-carboxyfluorescein single isomer.
<ul>
<li>&lamba;Ex/λEm (pH 9) = 492/514 nm</li>
<li>Yellow orange solid soluble in pH>6 water</li>
<li>Store at 4°C and protect from light, especially in solution</li>
<li>C<sub>21</sub>H<sub>12</sub>O<sub>7</sub></li>
<li>MW: 376.3</li>
<li>[76823-03-5]</li>
</ul>
CAS Number
Molecular Weight
Molecular Formula
Tag / Host
Species
Expression
