Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tsuyoshi Shigeoka and Yasuhisa Kuwahara and Kiyoko Watanabe,"Synthesis of Fluorine Analogs of Protoporphyrin Potentially Useful for Diagnosis and Therapy of Cancer(Part 3)Synthesis of(2,2-Difluorovinyl)trifluorovinyl- and(1-Chloro-2,2-difluorovinyl)-(2,2-difluorovinyl)deuteroporphyrin",Heterocycles : an international journal for reviews and communications in heterocyclic chemistry,03855414,Tokyo : Japan Institute of Heterocyclic Chemistry,2000-01,52,1,383-388,https://cir.nii.ac.jp/crid/1520291855600753792,