Abstract: Purified imines of porphyrins, chlorins, bateriochlorins, chlorophylls, bacteriochlorophylls, purpurins, reduced purpurins, verdins, Diels Alder adducts, benzochlorins and metal complexes of the foregoing imines are disclosed. The formulas of the benzochlorinimines and of the benzochlorinimine metal complexes are set forth below: ##STR1## In specific examples, M in the metal complexes is a copper cation that is complexed with two of the nitrogens of the benzochlorinimine R' and R"" are methyl, and R1 through R8 are ethyl.

Abstract: A family of benzochlorins, a family of verdins, a family of porphyrin derivatives and metal complexes thereof are disclosed. the benzochlorins have the formula of FIG. 3 of the attached drawings; their metal complexes have the formula of FIG. 1. The verdins have the formula of FIG. 4 of the attached drawings; their metal complexes have the formula of FIG. 2. The porphyrin derivatives have the formula of FIG. 9 of the attached drawings; their metal complexes have the formula of FIG. 10. Solutions of the benzochlorins, verdins, porphyrin derivatives and metal complexes which are physiologically acceptable for intravenous administration are also disclosed, as are emulsions or suspensions of the solutions, and compositions which additionally include cyclodextrin, and wherein the molecules of the benzochlorin, verdin, prophyrin derivative or metal complex are encapsulated within the molecules of the cyclodextrin. The solvent for the solutions can be a product of the reaction of ethylene oxide with castor oil.