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Boron difluoride compounds useful in photodynamic therapy and production of laser light

  • US 5,446,157 A
  • Filed: 02/19/1993
  • Issued: 08/29/1995
  • Est. Priority Date: 04/23/1990
  • Status: Expired due to Fees
First Claim
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1. A compound selected from the group consisting of:

  • (a) ##STR50## wherein R is H or lower alkyl;

    (b) ##STR51## wherein X is CH or N, Y is CH or N, and R is lower alkyl, where at least one of X and Y is N; and

    (c) α



    '"'"'-dipyridylmethane-BF2.

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