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Fexofenadine, sold under the brand name Allegra among others, [10] is an antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever and urticaria. [ 11 ] Therapeutically, fexofenadine is a selective peripheral H 1 blocker .
Cyanoacetamide is used in spectrofluorimetric methods to determine the activity of antihistamine H1 receptor antagonistic drugs such as ebastine, cetirizine dihydrochloride and fexofenadine hydrochloride. [3]
H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.
Upon study of records in mouse studies associated with 40 common medications ranging from antibiotics, antihistamines, aspirin, and hydrocortisone, that for subjects with melanoma and lung cancers, fexofenadine, one of three medications, along with loratadine, and cetirizine, that target histamine receptor H1 (HRH1), demonstrated significantly ...
Piceol can be used to make acetaminophen by condensation with hydroxylamine and subsequent Beckmann rearrangement in acid. [ 4 ] Anticonvulsants are also possible by Mannich reaction : [ 5 ]
The values below are standard apparent reduction potentials (E°') for electro-biochemical half-reactions measured at 25 °C, 1 atmosphere and a pH of 7 in aqueous solution. [ 1 ] [ 2 ] The actual physiological potential depends on the ratio of the reduced ( Red ) and oxidized ( Ox ) forms according to the Nernst equation and the thermal voltage .
In organic chemistry, the Arndt–Eistert reaction is the conversion of a carboxylic acid to its homologue. It is named for the German chemists Fritz Arndt (1885–1969) and Bernd Eistert (1902–1978). The method entails treating an acid chlorides with diazomethane. It is a popular method of producing β-amino acids from α-amino acids. [1]
When N-chloroamine 56 was treated with sulfuric acid and heat, 2-adamantanone was formed, but photolysis of 56 in the sulfuric acid-acetic acid mixture, using a low-pressure mercury lamp at 25 °C for 1-hour gave a good yield (85%) of the desired product 57. The cyclization of 57 presented considerable difficulties, but it was finally achieved ...
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