2793. Cytohemin
Nomenclature
CAS number: 19554-22-4
(SP-5-13)-Chloro[(4E,8E)-7-ethenyl-17-formyl-12-(1-hydroxy-5,9,13-trimethyl-4,8,12-tetradecatrienyl)-3,8,13-trimethyl-21H,23H-porphine-2,18-dipropanoato(4-)-κN21,κN22,κN23,κN24]ferrate(2-) dihydrogen; chloro[dihydrogen-3-formyl-8-(1-hydroxy-5,9,13-trimethyltetradecyl)-7,12,17-trimethyl-13-vinyl-2,18-porphinedipropionato(2-)]iron. C49H56ClFeN4O6; mol wt 888.29.
C 66.25%, H 6.35%, Cl 3.99%, Fe 6.29%, N 6.31%, O 10.81%.
Description and references
Isoln from heart muscle: Warburg, Gewitz, Z. Physiol. Chem. 288, 1 (1951); Lemberg, Biochem. Z. 338, 97 (1963). Structure: M. Grassl et al., ibid. 337, 35 (1963); 338, 771 (1963). Side chain appears to be a mixture of saturated and unsaturated forms: R. Sayffert et al., 3rd Proc. Colloq. Hemes Hemoproteins, 1966, 45-59. Unsaturated form drawn.
