The present invention relates to an optical filter containing: an absorption layer containing a near-infrared absorbing dye satisfying the following (i-1) to (i-5), and a transparent resin; and a reflection layer, and satisfying the following (ii-1); (i-1) ?.sub.max(A) TR is in a wavelength range of 760 to 900 nm; (i-2) T.sub.435-480ave (A) TR and T.sub.480-590ave (A) TR are both 90% or more. (i-3) ?.sub.max(A) DCM is in a wavelength range of 760 to 900 nm. (i-4) T.sub.435-480ave (A) DCM is 95% or more and T.sub.480-590ave (A) DCM is 97% or more. (i-5) a difference between T.sub.435-480ave (A) DCM and T.sub.435-480ave (A) TR, and a difference between T.sub.480-590ave (A) DCM and T.sub.480-590ave (A) TR are 10.5% or less. (ii-1) an average transmittance of light in the wavelength range of 800 to 900 nm is 5% or less at an incident angle of 60 degrees.

Provided herein are heterocyclic near infrared compounds, including near IR compounds defined by Formulae I-V described herein. The near infrared compounds can include a cyanine group, a phthalocyanine group, a naphthalocyanine group, a squaraine group, a carbocyanine group, or a combination thereof. In some embodiments, the near infrared compound can be charged. In some embodiments, the near infrared compound can comprise a cationic group. Compositions comprising the near infrared compounds are also disclosed. In some embodiments, the composition can contain the near infrared compound, a polymer, and an acceptable carrier. In some embodiments, the polymer can include an anionic group. The compositions can be used as a coating for marking a surface, such as an ink. The compositions can also be used on articles for detecting, identifying, or authenticating the article. Methods of making the compositions described herein are also disclosed.

The present invention provides methods, compositions, mixtures and kits utilizing deoxynucleoside triphosphates comprising a 3-O position capped by a group comprising methylenedisulfide as a cleavable protecting group and a detectable label reversibly connected to the nucleobase of said deoxynucleoside. Such compounds provide new possibilities for future sequencing technologies, including but not limited to Sequencing by Synthesis.

The present invention provides methods, compositions, mixtures and kits utilizing deoxynucleoside triphosphates comprising a 3-O position capped by a group comprising methylenedisulfide as a cleavable protecting group and a detectable label reversibly connected to the nucleobase of said deoxynucleoside. Such compounds provide new possibilities for future sequencing technologies, including but not limited to Sequencing by Synthesis.

The present invention provides methods, compositions, mixtures and kits utilizing deoxynucleoside triphosphates comprising a 3-O position capped by a group comprising methylenedisulfide as a cleavable protecting group and a detectable label reversibly connected to the nucleobase of said deoxynucleoside. Such compounds provide new possibilities for future sequencing technologies, including but not limited to Sequencing by Synthesis.

Fluorescent chromophores nicknamed BOPHY are provided. The chromophores may be readily synthesized in two steps from readily available reagents via the coupling of a pyrrole aldehyde or ketone with hydrazine, followed by reaction with BF.sub.3. The resultant symmetric and dimeric tetracycle is comprised of two BF.sub.2 units in six-member chelate rings, appended by pyrrole units on the periphery. The quantum yield of fluorescence for the unmodified compound and the tetramethyl variant are near unity, with values 95 and 92% respectively in CH.sub.2Cl.sub.2.

This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.

This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.

A color developing composition which develops colors in a high density and does not significantly discolor when aged, a lithographic printing plate precursor which has excellent plate-inspecting properties by means of color development and is capable of maintaining strong color development even when aged after color development, a plate making method for a lithographic printing plate in which the lithographic printing plate precursor is used, and a new compound that can be preferably used as a color developer. The color developing composition of the present invention includes a compound represented by Formula 1. The compound in the present invention is represented by Formula 1. In Formula 1, R.sup.1 represents a group in which an R.sup.1O bond is cleaved by heat or exposure to infrared rays. ##STR00001##

With a colored composition of the related art, elution resistance within a practical range is not obtained. Therefore, an object of the present invention is to provide a colored composition having better elution resistance (less dye elution) than that of the colored composition of the related art.

The present invention relates to a compound represented by the following general formula (1), a colored composition comprising the compound, and the like.

##STR00001##

{In the formula, Dye represents a dye residue, R.sub.1 represents a hydrogen atom or a methyl group, Y.sub.0 represents a single bond or the like, Y.sub.1 and Y.sub.2 each independently represent O or the like, A.sub.1 represents a specific alkylene group or the like, A.sub.2 represents an alkylene group which may have O in a chain and has a group represented by the following general formula (2) in the chain or on the terminal of the chain, and n represents 1 or 2;

##STR00002## (in the formula, R.sub.1 and Y.sub.2 are the same as described above, R.sub.3 represents a group represented by the following general formula (2-1) or the like, and A.sub.3 represents a specific alkylene group or the like;

##STR00003## [in the formula, R.sub.1, A.sub.3, and Y.sub.2 are the same as described above.].).}