Method for producing contrast agent
US9416276B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Nov 5, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Nov 5, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0095
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for producing a contrast agent includes the reaction step of allowing a cyanine dye containing a naphthyl group and a carboxyl or carboxylate group to react with a polyethylene glycol containing an amino group in an organic solvent to form a conjugate, and the purification step of purifying the conjugate using an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.