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Pyrimidine (C 4 H 4 N 2; / p ɪ ˈ r ɪ. m ɪ ˌ d iː n, p aɪ ˈ r ɪ. m ɪ ˌ d iː n /) is an aromatic, heterocyclic, organic compound similar to pyridine (C 5 H 5 N). [3] One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has nitrogen atoms at positions 1 and 3 in the ring.
Regions of the Greek islands. Greece has many islands, [Note 1] with estimates ranging from somewhere around 1,200 [1] to 6,000, [2] depending on the minimum size to take into account. The number of inhabited islands is variously cited as between 166 [3] and 227. [2] The largest Greek island by both area and population is Crete, located at the ...
Left: The structure of pyrimidine with the locants for ring atoms marked. Right : 5-Fluorouracil , a fluoropyrimidine formally named as 5-fluoro-1 H ,3 H -pyrimidine-2,4-dione Fluoropyrimidines are a general class organic compounds in which the substituent (s) around a pyrimidine ring include at least one fluorine atom.
Pyrimidines are organic compounds that contain the pyrimidine base structure. Subcategories. This category has the following 9 subcategories, out of 9 total. A.
The island's tourism in the early 1950s generally took the form of small numbers of wealthy tourists on yacht cruises though the Aegean. The island's children would present arriving passengers with flowers and bid them happy sailing by lighting small lanterns along the steps from Fira down to the port, offering them a beautiful farewell spectacle.
Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also gives its name to the wider class of molecules, purines, which include substituted purines and their tautomers. They are the most widely occurring nitrogen-containing heterocycles in nature. [1]
Aegean Sea with island groups Extent of the Aegean Sea. This is a list of Aegean Islands, which includes the English, Modern Greek, Ancient Greek, Latin, Medieval Latin, and Italian names for these islands in the Aegean Sea arranged by island group.
Farmakonisi (Greek: Φαρμακονήσι) is a small Greek island and community of the Dodecanese, in the Aegean Sea, Greece. It lies in the middle between the chain of the Dodecanese islands in the west, and the coast of Asia Minor ( Turkey ) in the east.