Cofactor analogues for methyltransferases are disclosed. The compounds are represented by formula (I) wherein R1 is COOH or COO—; X is an organic or inorganic anion carrying one or more negative charges; Y and Y′ are H, or an alkyl; R2 is NH.sub.2, NHBoc, or H; and Z is S or Se. R comprises a carbon-carbon double bond, carbon-oxygen double bond, carbon-sulfur double bond, carbon-nitrogen double bond, a carbon-carbon triple bond, carbon-nitrogen triple bond, an aromatic carbocyclic or heterocyclic system in β-position to the sulfonium center, unsaturated c-c bond, or c-heteroatom bond where the heteroatom is O, N, S.

A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.

A new leuco dye produces a yellow color while demonstrating also exceptional light and thermal stability under light.

Molecular probes for detecting and imaging pancreatic cancer are disclosed. The probes are modified benzoxanthene fluorophores, which are selectively taken up by pancreatic cancer cells, such as pancreatic ductal adenocarcinoma cells. Embodiments of the disclosed probes are useful for pancreatic cancer detection, therapeutic monitoring, and/or image-guided surgery.

Molecular probes for detecting and imaging pancreatic cancer are disclosed. The probes are modified benzoxanthene fluorophores, which are selectively taken up by pancreatic cancer cells, such as pancreatic ductal adenocarcinoma cells. Embodiments of the disclosed probes are useful for pancreatic cancer detection, therapeutic monitoring, and/or image-guided surgery.

A fluorescent probe is capable of detecting breast cancer, lung cancer, and squamous cell carcinoma. The fluorescent probe is also capable of detecting a benign tumor of a mammary gland. The fluorescent probe includes a compound represented by the following general formula or a salt thereof:

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A composition includes a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye that is functionalized with a functional group. The functional group includes a primary amine. The functionalized fluorescent dye can be mixed with a fluid to form a tracer fluid for tracing fluid flow in a subterranean formation.

A composition includes a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye that is functionalized with a functional group. The functional group includes a primary amine. The functionalized fluorescent dye can be mixed with a fluid to form a tracer fluid for tracing fluid flow in a subterranean formation.

The present invention relates to the field of medicine, specifically to ophthalmic surgery, more specifically to a novel ophthalmic dye for surgery which does not stain living cells.

The present invention relates to the field of medicine, specifically to ophthalmic surgery, more specifically to a novel ophthalmic dye for surgery which does not stain living cells.