Descrition & Target

DNP-X acid, SE [6-(2,4-Dinitrophenyl)aminohexanoic acid, succinimidyl ester] *CAS 82321-04-8*

Descrition & Target

DODC (DiOC₂(5)) has been reported to bind to triplex DNA as well as dimeric hairpin quadruplex DNA. Binding of the dye to triplex DNA quenches the fluorescence of the dye and red-shifts the dye absorption peak. <ul> <li>&lamba;A_bs = 582 nm</li> <li>Red solid soluble in DMSO or MeOH</li> <li>Store at 4°C</li> <li>C₂₃H₂₃IN₂O₂</li> <li>MW: 486.35</li> </ul>

Descrition & Target

Dipicrylamine (DPA) is a nonfluorescent anionic membrane dye. With its absorbance in the blue region of the visible spectrum, DPA can be used as a FRET quencher for a variety of fluorescent donor dyes. When applied to cells, DPA localizes at the interface of cytoplasmic membrane and aqueous phase in a manner sensitive to membrane potential change. A recent application of DPA is to measure cell membrane potential change by combining with the fluorescent donor dye DiOC16. The DiO/DPA system has been reported to produce a fluorescence signal change of &gt;56% in HEK-293 cells and &gt;25% in neuronal cultures and brain slices per 100 mV membrane potential change. Please also see the DiO/DPA Membrane Potential Detection Kit.

Yellow solid soluble in DMSO at &gt;30mg/mL
<ul>
<li>&lamba;abs (MeOH) = 406 nm</li>
<li>Store at 4°C</li>
<li>MWt: 439.21</li>
<li>[131-73-7]</li>
</ul>
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Descrition & Target

The principle of DPA/Tb³ for vesicle fusion assay is based on the fact that contact of the chelator dipicolinic acid (DPA) with terbium (III) forms an instant Tb³-DPA complex that is <em>~</em>10,000 times more fluorescent than free Tb³. In the assay, separate vesicle populations are loaded with 2.5 mM TbCl3 in 50 mM sodium citrate, or 50 mM DPA in 20 mM NaCl. Fusion of the two types of vesicles results in fluorescence increase at 490 nm or 545 nm, with excitation at 276 nm. Each set of product contains 1 g terbium trichloride and 1 g DPA in two separate vials. Please also see SDIP/Europium for membrane fusion assay, which results in intense red fluorescence upon complex formation.
<ul>
<li>&lamba;Ex/&lamba;Em (DPA/Tb³ complex) = 276/490 and 545 nm</li>
<li>DPA and Terbium are white solids and readily soluble in water</li>
<li>Store both reagents at room temperature</li>
<li>MW of DPA: 167.12</li>
<li>CAS#: 499-83-2</li>
<li>MW of Terbium: 265.3</li>
<li>CAS#:13798-24-8</li>
</ul>

Descrition & Target

DPX is a positively charged quencher that is often used with ANTS to study membrane fusion or permeability.
<ul>
<li>Off-white solid soluble in water</li>
<li>Store desiccated at 4°C</li>
<li>C₁₈H₁₈Br₂N₂</li>
<li>MW: 422</li>
<li>[14208-10-7]</li>
</ul>

Descrition & Target

Collagen determination in biological and cosmetic products by fluorimetric (375/465nm) method. Procedure: 80 min. Kit size: 100 tests. Detection limit: 2 µg/mL to 50 µg/mL collagen. Shelf life: 6 months. Shipping: on ice; storage: -20°C.

Descrition & Target

DSG [Di(N-succinimidyl) glutarate] *CAS 79642-50-5*

Descrition & Target

DTT (dithiothreitol) is a reducing agent commonly used to reduce cystine disulfides to free thiols.
<ul>
<li>White solid soluble in water (5% w/v)</li>
<li>Store at -20°C</li>
<li>C₄H₁₀O₂S₂</li>
<li>MW: 154.2</li>
<li>[3483-12-3]</li>
</ul>

Descrition & Target

Quantitative determination of cholesterol by colorimetric (570nm) or fluorometric (530nm/590nm) methods. Procedure: 40 min. Kit size: 100 tests. Detection limit: colorimetric assay 1 mg/dL, fluorimetric assay 0.2 mg/dL. Shelf life: 6 months. Shipping: on ice; storage: -20°C.

Descrition & Target

Danofloaxcin-KLH Conjugate

Descrition & Target

Danofloxacin-BSA Conjugate

Descrition & Target

Danofloxacin-HRP Conjugate

Descrition & Target

Dansyl cadaverine [5-Dimethylaminonaphthalene-1-(N-(5-aminopentyl))sulfonamide]

Descrition & Target

Dansyl chloride [5-Dimethylaminonaphthalene-1-sulfonyl chloride] *CAS 605-65-2*

Descrition & Target

Dansyl-X, SE