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Hematoporphyrin derivative and method of preparation and purification

  • US 4,861,876 A
  • Filed: 11/26/1986
  • Issued: 08/29/1989
  • Est. Priority Date: 11/26/1986
  • Status: Expired due to Fees
First Claim
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1. A substance effective for treatment of tumor cells having a fluorescent emission between 640 and 650 nm and capable of preferentially localizing in and being retained in tumor cells over normal cells, the substance selected from the group consisting of:

  • ##STR2## and its isomers;

    ##STR3## and its isomers;

    II. the alkali metal salts thereof; and

    mixtures thereof;

    IV. the alkali metal salts thereof; and

    mixtures thereof;

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