The present disclosure relates to compounds that are useful as near-infrared fluorescence probes, wherein the compounds include i) a ligand that binds to the active site of carbonic anhydrase, ii) a dye molecule, and iii) a linker molecule that comprises an amino acid, amide, ureido, or polyethylene glycol derivative thereof. The disclosure further describes methods and compositions for making and using the compounds, methods incorporating the compounds, and kits incorporating the compounds.

Compositions and methods of synthesizing near IR, closed chain, sulfo-cyanine dyes are provided.

Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

This current disclosure is directed to charge-transfer heptamethine dyes for NIR singlet oxygen generation, each such dye comprising a near-infrared (NIR) absorbing dye having heptamethine linkages orthogonally coupled to an optionally substituted cationic heteroaryl ring moiety as a charge-transfer partner and uses thereof.

The present invention is a crystal of 3-(3-{[3-(cyclomaltoheptaos-21-O-yl)propyl]amino}-3-oxopropyl)-2-{(1E)-2-[(3E)-3-{(2E)-2-[3-(3-{[3-(cyclomaltoheptaos-21-O-yl)propyl]amino}-3-oxopropyl)-1,1-dimethyl-1,3-dihydro-2H-benzo[e]indo1-2-ylidene]ethylidene}-2-methoxycyclohex-1-en-1-yl]ethen-1-yl}-1,1-dimethyl-1H-benzo [e]indol-3-ium chloride.

There are provided a compound of Formula (1) and a labeled biological substance having the compound.

##STR00001##

Z.sup.1 and Z.sup.2 represent a specific 6-membered ring. However, at least one of Z.sup.1 or Z.sup.2 is a benzene ring having a specific substituent at an ortho position with respect to a nitrogen atom to which L.sup.1 or L.sup.2 is bonded, or a specific nitrogen-containing 6-membered ring in which a ring-constituting atom located at the ortho position is a nitrogen atom.

R.sup.1 to R.sup.4, R.sup.11 to R.sup.13, L.sup.1, L.sup.2, and R.sup.21 represents specific groups, and n, α1, α2, and m represent specific numbers.

The compound has at least one structure represented by —(CH.sub.2—CH.sub.2—O).sub.m-R.sup.21 on a heterocyclic ring and has at least one substituent capable of being bonded to a carboxy group or a biological substance at a specific position, and in a case where at least one of Z.sup.1 or Z.sup.2 is the specific nitrogen-containing 6-membered ring, the specific substituents may be bonded to each other to form a ring.

The instant invention provides near-infrared fluorescent biological contrast agents and methods of using them.

A composition includes two or more near infrared absorbing compounds having an absorption maximum in a wavelength range of 650 to 1000 nm and having a solubility of 0.1 mass % or lower in water at 23° C., in which the two or more near infrared absorbing compounds include a first near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm, and a second near infrared absorbing compound having an absorption maximum in a wavelength range of 650 to 1000 nm which is shorter than the absorption maximum of the first near infrared absorbing compound, and a difference between the absorption maximum of the first near infrared absorbing compound and the absorption maximum of the second near infrared absorbing compound is 1 to 150 nm.

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

Near-infrared activatable fluorescent small molecules for the photodynamic treatment of cancer are provided. Methods of treatment include contacting a plurality of cells of the cancer with a near-infrared activatable fluorescent small molecule and directing a near-IR light to the molecule for an amount of time sufficient to induce release of the active platinum species and a reactive oxygen species.