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EGTA (1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid) is a water-soluble and cell-impermeable calcium chelator.

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Calcium measurement is critical for numerous biological investigations.

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Calcium measurement is critical for numerous biological investigations.

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The cell-impermeant Fluo-3FF is an analog of Fluo-3 with much lower calcium binding affinity, Kd ~10 µM.

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This amine-reactive biotin derivative contains a long arm (~20 Å) to increase its avidin-binding affinity.

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Biotin and biotin derivatives bind with high affinity to both avidins and streptavidins.

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Biotin/avidin complexes are widely applied for a variety of biological detections.

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Biotin/avidin complexes are widely applied for a variety of biological detections.

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N-FMOC-ethylenediamine is a monoprotected diamine that is widely used as a building block in bioconjugate chemistry.

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SMCC is a non-cleavable and membrane permeable crosslinker with a spacer arm of 8.3 Å. It contains an amine-reactive succinimidyl ester (SE) and a sulfhydryl-reactive maleimide group. NHS esters react with primary amines at pH 7 to 9 to form stable amide bonds. Maleimides react with sulfhydryl groups at pH 6.5 to 7.5 to form stable thioether bonds. The SE group of SMCC is reacted with lysine residues on the carrier protein, converting them to reactive maleimides. SMCC is a reagent that is widely used for generating stable maleimide-activated carrier proteins that can spontaneously react with sulfhydryls. Alternatively these relatively stable maleimide-activated intermediates may be lyophilized and stored for later conjugation to a hapten.

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An amine-reactive building block for developing a probe that can be recognized by anti-DNP antibodies; Also an excellent amine-reactive FRET quencher paired with Trp or Tyr.

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TQ5 is designed to be a superior quencher to Cy5, TF5 and Cy5.5.

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FMOC-Glu(5/6-TAMRA)-OH is a building block for in-sequence peptide Glu labeling by TAMRA.

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FMOC-Lys(Cy5)-OH is a building block for in-sequence Lys labeling by Cy5.

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(3S,4S)-Statine is a novel amino acid of pepstatin, a low molecular weight inhibitor of acid proteases.

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FMOC-Asp(TQ2)-OH is a building block for in-sequence Lys labeling by Tide Quencher™ 2 (TQ2).

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FMOC-Lys(TQ2)-OH is a building block for in-sequence Lys labeling by Tide Quencher™ 2 (TQ2).

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This fluorogenic resorufin ether is widely used for monitoring P450 activities in cell extracts and solutions.

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Peroxynitrite (ONOO-) is a strong oxidizing species and a highly active nitrating agent.

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Peroxynitrite (ONOO-) is a strong oxidizing species and a highly active nitrating agent.

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Screen Quest™ TR-FRET No Wash cAMP Assay Kit provides a convenient assay method for monitoring the activation of adenylyl cyclase in G-protein coupled receptor systems.

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6-TAMRA ethylenediamine is a building block for developing TAMRA bioconjugates.

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TAMRA is one of the most popular fluorophores used in various bioconjugations.

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6-TAMRA is the purified single isomer of 5(6)-TAMRA.

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A variety of cyanine 3 (Cy3®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.

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A variety of cyanine 3 (Cy3®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.

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A variety of cyanine 3.5 (Cy3.5®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.

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A variety of cyanine 5 (Cy5®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.

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A variety of cyanine 5 ( Cy5®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.

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A variety of cyanine 7 (Cy7®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis.