The present invention relates to: a labeling dye having excellent fluorescent intensity and photostability; and a kit.

The present invention relates to: a labeling dye having excellent fluorescent intensity and photostability; and a kit.

Embodiments of the present disclosure relate to cyclooctatetraene containing dyes and their uses as fluorescent labels. Also provided are composition containing cyclooctatetraene. The dyes and compositions may be used in various biological applications, such as nucleic acid sequencing.

Embodiments of the present disclosure relate to cyclooctatetraene containing dyes and their uses as fluorescent labels. Also provided are composition containing cyclooctatetraene. The dyes and compositions may be used in various biological applications, such as nucleic acid sequencing.

The present disclosure provides methods for the rapid synthesis of pyranoanthocyanins.

The invention relates to novel, water-soluble fluorescent dyes with high fluorescence quantum yield based on oxygen-containing heterocycles, their reactive derivatives and dye conjugates, and their use for labelling samples and detecting analytes. The compounds of the new dye class are compatible with commercial excitation light sources and are characterised by Stokes shifts of more than 50 nm.

The invention relates to novel, water-soluble fluorescent dyes with high fluorescence quantum yield based on oxygen-containing heterocycles, their reactive derivatives and dye conjugates, and their use for labelling samples and detecting analytes. The compounds of the new dye class are compatible with commercial excitation light sources and are characterised by Stokes shifts of more than 50 nm.

An embodiment provides a method for measuring total chlorine in a solution, including: preparing a thiocarbamate indicator; introducing the thiocarbamate indicator to a solution, wherein the solution contains an amount of monochloramine; adding an additive to the solution, wherein the additive accelerates the reaction rate between the thiocarbamate indicator and monochloramine and causes a change in fluorescence of the solution; and measuring the amount of monochloramine in the solution by measuring an intensity of the fluorescence. Other aspects are described and claimed.

The present invention provides: a photochromic curable composition which contains (A) a (meth)acrylate composition that contains from 24 to 100% by mass of a polyfunctional (meth)acrylate which has three or more (meth)acryloyl groups in each molecule and (B) a photochromic compound that is obtained by bonding at least one specific naphthopyran to a long-chain group having a number average molecular weight of from 300 to 10,000; and a photochromic optical article which is obtained by polymerizing this photochromic curable composition.

A staining method includes staining a biological sample with a coumarin fluorescent dye to provide a fluorescent-stained sample, and bringing the fluorescent-stained sample into contact with osmium tetroxide, further embedding the sample in an epoxy resin, and subsequently slicing the sample to provide a section sample including the fluorescent-stained sample.