Contain(s) propionic and acetic acid side chains on pyrrole rings:
- A. Uroporphyrinogen I
- B. Uroporphyrin III
- Both A and B
Neither A or B
- Uro- denotes propionic and acetic acid groups.
- Copro- denotes propionic acid and methyl groups.
- Proto- denotes propionic acid, methyl and vinyl groups.
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