porphin

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Porphine - Wikipedia
Porphine or porphin is an organic compound of empirical formula C 20H 14N 4. It is heterocyclic and aromatic. The molecule is a flat macrocycle, ... en.wikipedia.org
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Porphine - American Chemical Society
Porphine (also called porphin) is a planar aromatic heterocyclic compound with a 12-carbon outside ring and four embedded pyrrole rings. www.acs.org
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PORPHIN Definition & Meaning | Merriam-Webster Medical
The meaning of PORPHIN is a deep purple crystalline compound C20H14N4 that is made synthetically from pyrrole and formaldehyde, contains four pyrrole rings ... www.merriam-webster.com
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porphin
porphin Chem. (ˈpɔːfɪn) Also -ine. [a. G. porphin (Fischer & Halbig 1926, in Ann. der Chem. CDXLVIII. 194), f. porph(yr)in porphyrin.] A synthetic, purple, crystalline solid, C20H14N4, which has a macrocyclic aromatic molecule consisting of four pyrrole residues linked by {b1}CH{b2} groups, and from... Oxford English Dictionary
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Porphyrin - PubChem
Porphyrin is a group of organic heterocyclic compounds that are comprised of four modified pyrrole subunits connected via methine bridges and form an aromatic ... pubchem.ncbi.nlm.nih.gov
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Porphyrin - Wikipedia
Porphyrins are heterocyclic, macrocyclic, organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine ... en.wikipedia.org
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porphin - Wiktionary, the free dictionary
porphin (plural porphins). (organic chemistry) A ring or four pyrrole rings linked by methine groups; it is the structure at the centre of hemoglobin, ... en.wiktionary.org
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Porphin - OMLC
This page summarizes the optical absorption and emission data of Porphin that is available in the PhotochemCAD package, version 2.1a (Du 1998, Dixon 2005). omlc.org
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Porphyrin - an overview | ScienceDirect Topics
Porphyrins are natural and synthetic compounds containing in their structure a macrocycle formed by four pyrrole moieties linked by methine groups. www.sciencedirect.com
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porphin | Taber's Medical Dictionary
(por′fĭn ) The basic ring structure forming the framework of all porphyrins. It consists of four pyrrole rings united by methene couplings. www.tabers.com
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porphyrin
porphyrin Chem. (ˈpɔːfɪrɪn) [a. G. porphyrin (Willstätter & Fritzsche 1909, in Ann. d. Chem. CCCLXXI. 33), f. haemato-porphyrin hæmatoporphyrin (s.v. hæmato-), f. Gr. πόρϕυρ-ος purple + -in -in1.] Any of a large class of deeply-coloured red or purple fluorescent crystalline pigments that are substit... Oxford English Dictionary
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Hexahydroporphine
The compound can also be prepared by reduction of porphin-zinc complexes. See also Tetrahydroporphine References Tetrapyrroles wikipedia.org
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Tetrapyrrole
in cyanobacteria) Luciferins as found in dinoflagellates and euphausiid shrimps (krill) Cyclic tetrapyrroles having four one-carbon bridges include: Porphin wikipedia.org
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protoporphyrin
protoˈporphyrin Chem. [a. G. protoporphyrin (Fischer & Lindner 1925, in Zeitschr. f. physiol. Chem. CXLII. 147): see proto- and porphyrin.] Any of a group of fifteen isomeric porphyrins, C34H34N4O4, in which the porphin nucleus has four methyl, two vinyl, and two propionic acid substituents; one iso... Oxford English Dictionary
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hemato-
hæmato-, hemato- (hiːmətəʊ, hɛmətəʊ) before a vowel hæmat-, hemat-, = Gr. αἱµατο-, combining form of αἷµα, αἱµατ- blood, freely used in Greek, and in many modern scientific terms, chiefly in physiology and medicine. (Several of these have shorter forms in hæmo-, q.v.) (The spelling hæmato- is more u... Oxford English Dictionary
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