METHOD FOR PURIFYING HEMIN, NEW HEMIN DERIVATIVE AND METHOD FOR PRODUCING IT.

摘要

PCT No. PCT/FI90/00097 Sec. 371 Date Oct. 17, 1991 Sec. 102(e) Date Oct. 17, 1991 PCT Filed Apr. 9, 1990 PCT Pub. No. WO90/12801 PCT Pub. Date Nov. 1, 1990.Process for the purification of hemin by dissolving raw hemin into 1,3-dimethyl-2-imidazolidinone (DMI), the mixture is allowed to cool in order to crystallize the hemin in the form of a 1:3-adduct of hemin and DMI, whereafter the adduct obtained is split by mixing the same with warm water, a lower alcohol or in a mixture thereof, or by heating in a vacuum, and the liberated hemin is recovered. The invention also concerns a novel hemin derivative, that is the 1:3-adduct of hemin and DMI, and a process for its preparation.