Acid-soluble pigments of molluscan shells. 4. Identification of shell porphyrins with particular reference to conchoporphyrin

Abstract

Extracts of porphyrin-containing molluscan shells were examined by adsorption and paper-partition chromatography. The presence of uroporphyrin and, in 1 sp., of coproporphyrin was shown. No evidence was found for the existence in these shells of the pentacarboxylic porphyrin descr. by Fischer and Jordan under the name of "conchoporphyrin".