нужна работа:
Synthesis of new deuteroporphyrin-IX derivatives by the reaction of hematoporphyrin-IX diester diethers with acetylacetone in the presence of zinc acetate
G. V. Ponomarev, G. V. Kirillova and A. M. Shul'ga
Volume 27, Number 11 / Ноябрь 1991 г.
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http://dx.doi.org/10.1007/BF00471760