Particle containing hydrophobic dye having cyanine structure, and contrast agent containing the particle
US9138492B2 · kind B2 · utility
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5References
6Claims
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Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/0093
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided is a particle which can stably hold a dye in itself even in an aqueous solution such as serum, in order to solve such a problem of a particle containing ICG, which has been conventionally used in a contrast agent or the like, that the ICG is a dye having a hydrophilic functional group and hence the ICG leaks out of the particle in an aqueous solution such as serum. More specifically, provided is a particle including a hydrophobic dye having a cyanine structure, in which the hydrophobic dye is represented by the following chemical formula (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.