Novel ether substituted fluorescein polyamino acid compounds as fluorescers and quenchers
US4318846A · kind A · utility
161Cited by
3References
22Claims
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Key dates
| Filing date | Sep 7, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Sep 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S530/806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Diether symmetrically substituted fluoresceins are provided having at least one anionic group and a linking functionality. Depending upon the site of substitution, the compounds can be used as fluorescers absorbing at wavelengths in excess of 500 nm or as quenchers, absorbing at wavelengths in excess of 500 nm and exhibiting substantially no fluorescence. The compounds find wide application, particularly as labels in fluorescent immunoassays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.