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In organic chemistry, the phenyl group, or phenyl ring, is a cyclic group of atoms with the formula C6H5, and is often represented by the symbol Ph (archaically φ) or Ø. The phenyl group is closely related to benzene and can be viewed as a benzene ring, minus a hydrogen, which may be replaced by some other element or compound to serve as a ...
Phenylalanine (symbol Phe or F) [3] is an essential α-amino acid with the formula C 9 H 11 NO 2.It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine.
Alternatively, the phenyl group could be treated as the substituent, being described within the name as "phenyl". This is usually done when the group attached to the phenyl group consists of six or more carbon atoms. [3] As an example, consider a hydroxyl group connected to a phenyl group. In this case, if the phenyl group were taken to be the ...
The synthesis of NanoPutian’s lower body begins with nitroaniline as a starting material. Addition of Br 2 in acetic acid places two equivalents of bromine on the benzene ring. NH 2 is an electron donating group, and NO 2 is an electron withdrawing group, which both direct bromination to the meta position relative to the NO 2 substituent.
These reactions are catalysed by a large group of broad-specificity transferases. UGT1A6 is a human gene encoding a phenol UDP glucuronosyltransferase active on simple phenols. [ 106 ] The enzyme encoded by the gene UGT1A8 has glucuronidase activity with many substrates including coumarins , anthraquinones and flavones .
This category includes chemical compounds that include a phenyl group, C 6 H 5 –. (That is, benzene with only one substituent or bond.) For benzene derivatives ( derivatives or structural analogs of benzene ) in which benzene has multiple substituents or bonds, see the parent category, Category:Benzene derivatives .
Will oral phenylephrine — found in DayQuil, Theraflu and other popular decongestants — be pulled from pharmacy shelves? What the FDA is planning after finding the ingredient ineffective.
In 1836, Auguste Laurent coined the name "phène" for benzene; [43] this is the root of the word "phenol" and "phenyl". In 1843, French chemist Charles Gerhardt coined the name "phénol". [44] The antiseptic properties of phenol were used by Sir Joseph Lister in his pioneering technique of antiseptic surgery. Lister decided that the wounds had ...