Spinochrome E

✍ Scribed by J. Smith; R.H. Thomson

• Book ID: 104235006
• Publisher: Elsevier Science
• Year: 1960
• Tongue: French
• Weight: 107 KB
• Volume: 1
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)82676-9

✦ Synopsis

SPINOCHROME E was first isolated, along with several other pigments, by Lederer,' from the calcareous parts of Mediterranean specimens of the sea urchin Paracentrotus lividus (Lam,), but insufficient material was available for chemical investigation. It has been obtained recently by Yoshida' from the species Psammechinus miliaris (Gemelin), in larger quantity. The pigment was isolated by treatment of the spines and test (shell) with hydrochloric acid, followed by dilution with methanol, and precipitation with pyridine. This product was then taken up in methanol, containing hydrochloric acid, from which spinochrome E separated. Recrystallization from acidified methanol gave brownish red needles, m.p. 3*0O. Carbon and hydrogen analysis indicated the formula CloHllOlo. We are greatly indebted to Dr. M. Yoshida for a gift of 200 mg. of this material.