SINCE 1828
pyrroporphyrin
noun
pyr·ro·porphyrin
| \ ¦pi(ˌ)rō+\
Definition of pyrroporphyrin
: a dark red crystalline pigment C32H36N4O2 with a violet metallic luster that is the lower homologue of phylloporphyrin and that differs from most porphyrins in being a hepta-substituted derivative of porphin rather than an octa-substituted one
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