spinochrome

Etymology
, because it comes from the spines of sea urchins.

Noun

 * 1) Any of a series of chemical compounds:
 * 2) spinochrome A (2-acetyl-3,5,6,8-tetrahydroxy-1,4-naphthalenedione)
 * 3) spinochrome B (2,3,5,7-tetrahydroxy-1,4-naphthalenedione)
 * 4) spinochrome C (2-acetyl-3,5,6,7,8-pentahydroxy-1,4-naphthalenedione)
 * 5) spinochrome D (2,3,5,6,8-Pentahydroxy-1,4-naphthalenedione)
 * 6) spinochrome E (hexahydroxy-1,4-naphthalenedione)