Porphyrins

A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.

Also Known As:

Porphyrin

Heterocyclic Compounds: 207
- 1-Ring Heterocyclic Compounds
  - Azoles: 2199
    - Pyrroles: 381
      - Tetrapyrroles: 71
        Porphyrins: 3373
- Fused-Ring Heterocyclic Compounds
  - 4 or More Rings Heterocyclic Compounds
    - Tetrapyrroles: 71
      - Porphyrins: 3373
Polycyclic Compounds: 7
- Macrocyclic Compounds: 16
  - Tetrapyrroles: 71
    - Porphyrins: 3373
Biological Factors: 2560
- Biological Pigments: 1
  - Porphyrins: 3373

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