Porhin

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Porhin

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Porphine or porphin is an organic compound of empirical formula C 20 H 14 N 4. It is heterocyclic and aromatic. The molecule is a flat macrocycle , consisting of four pyrrole -like rings joined by four methine bridges, which makes it the simplest of the tetrapyrroles. The nonpolar tetrapyrrolic ring structure of porphine means it is poorly soluble in most organic solvents and hardly water soluble. Substituted derivatives of porphine are called porphyrins. Many porphyrins are found in nature with the dominant example being protoporphyrin IX. CAS Number. Interactive image.

Porhin

Network with colleagues and access the latest research in your field. ACS-Hach Programs Learn about financial support for future and current high school chemistry teachers. Find a chemistry community of interest and connect on a local and global level. Technical Divisions Collaborate with scientists in your field of chemistry and stay current in your area of specialization. Explore the interesting world of science with articles, videos and more. ChemLuminary Awards Recognizing ACS local sections, divisions and other volunteers for their work in promoting chemistry. Porphine also called porphin is a planar aromatic heterocyclic compound with a carbon outside ring and four embedded pyrrole rings. It is a dark red crystalline solid that is soluble in some polar solvents such as pyridine and dioxane.

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Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. They are present in the outer membrane of gram-negative bacteria and some gram-positive mycobacteria mycolic acid-containing actinomycetes , the outer membrane of mitochondria , and the outer chloroplast membrane outer plastid membrane.

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