7388. Phytochlorin

Nomenclature

CAS number: 19660-77-6
18-Carboxy-20-(carboxymethyl)-8-ethenyl-13-ethyl-2,3-dihydro-3,7,12,17-tetramethyl-21H,23H-porphine-2-propanoic acid; chlorin e6; phytochlorin e.
C34H36N4O6; mol wt 596.67.
C 68.44%, H 6.08%, N 9.39%, O 16.09%.

Description and references

Prepn from broccoli-leaf extract: Wall, US 2555583 (1951 to U.S.D.A.). Review: H. Fischer, A. Stern, Die Chemie des Pyrrols vol. II, 2 (Leipzig, 1940) pp 91-94; The Chlorophylls, L. P. Vernon, G. R. Seely, Eds. (Academic Press, New York, 1966) pp 9, 12, 71, 90, 95, 98, 142.

Chemical structure

Properties

Greenish-brown rectangular plates. May contain one mol water. [α]D20 -141° in acetone. Ether solns are olive-green with deep red fluorescence. Sparingly sol in ethanol, ether, acetone. Freely sol in pyridine.