4, 7-Dichlororhodamine dyes
US5847162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B11/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A class of 4,7-dichlororhodamine compounds useful as fluorescent dyes are disclosed having the structure ##STR1## wherein R.sub.1 -R.sub.6 are hydrogen, fluorine, chlorine, lower alkyl lower alkene, lower alkyne, sulfonate, sulfone, amino, amido, nitrile, lower alkoxy, lining group, or combinations thereof or, when taken together, R.sub.1 and R.sub.6 is benzo, or, when taken together, R.sub.4 and R.sub.5 is benzo; Y.sub.1 -Y.sub.4 are hydrogen or lower alkyl or, when taken together, Y.sub.1 and R.sub.2 is propano and Y.sub.2 and R.sub.1 is propano, or, when taken together, Y.sub.3 and R.sub.3 is propano and Y.sub.4 and R.sub.4 is propano; and X.sub.1 -X.sub.3 taken separately are selected from the group consisting of hydrogen, chlorine, fluorine, lower alkyl carboxylate, sulfonic acid, --CH.sub.2 OH, and linking group. In another aspect, the invention includes reagents labeled with the 4,7-dichlororhodamine dye compounds, including deoxynucleotides, dideoxynucleotides, and polynucleotides. In an additional aspect, the invention includes methods utilizing such dye compounds and reagents including dideoxy polynucleotide sequencing and fragment analysis methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.