Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2011-07-19
2011-07-19
Andres, Janet L. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S224000
Reexamination Certificate
active
07982056
ABSTRACT:
The present invention is directed to an improved process for producing substantially pure fluorescein, as well as to substantially pure fluorescein compositions prepared by the process. The invention is particularly directed to the provision of pharmaceutical compositions for use in angiography. The substantially pure fluorescein produced by the process of the present invention is low in color, low in sodium chloride content, and substantially free of pyridine.
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Bydlinski Gregory
Harris Robert Gregg
Scott Britt S.
Alcon Research, Ltd.
Andres Janet L.
Covington Raymond
Rein Michael D.
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