Search results
Results from the WOW.Com Content Network
Containing a pyridinium ion, pyridinium chloride has a pK a of approximately 5, slightly more acidic than that of typical amines.This is due to the hybridization of the nitrogen: the nitrogen is sp 2 hybridized and more electronegative than those nitrogens in ammonium cations, which are sp 3 hybridized.
Pyridine is a basic heterocyclic organic compound with the chemical formula C 5 H 5 N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom (=N−). It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish
Citric acid, a main compound in lemon, can have a “calming effect” on the stomach and a “distracting effect that can shift one’s attention away from the feeling of nausea,” Nanavati ...
C 5 H 5 N + HCl + CrO 3 → [C 5 H 5 NH][CrO 3 Cl] In one alternative method, formation of toxic chromyl chloride (CrO 2 Cl 2) fumes during the making of the aforementioned solution were minimized by simply changing the order of addition: a cold solution of pyridine in concentrated hydrochloric acid was added to solid chromium trioxide under ...
Cr(VI)-pyridine and pyridinium reagents have the advantage that they are soluble in organic solvents as are the alcohol substrates. One family of reagents employs the complex CrO 3 (pyridine) 2. [2] Sarett's reagent: a solution of CrO 3 (pyridine) 2 in pyridine. It was popularized for selective oxidation of primary and secondary alcohols to ...
Methapyrilene is an antihistamine and anticholinergic of the pyridine chemical class which was developed in the early 1950s. It was sold under the trade names Co-Pyronil and Histadyl EC in the UK. [1] It has relatively strong sedative effects, to the extent that its primary use was as a medication for insomnia rather
Picolinic acid is an organic compound with the formula NC 5 H 4 CO 2 H.It is a derivative of pyridine with a carboxylic acid (COOH) substituent at the 2-position. It is an isomer of nicotinic acid and isonicotinic acid, which have the carboxyl side chain at the 3- and 4-positions, respectively.
The range contains 200 mg of guaifenesin which helps to relieve chesty cough, in addition to 1000 mg of paracetamol and 12.2 mg of phenylephrine hydrochloride (12.18 mg of phenylephrine hydrochloride in Lemsip Max All In One Liquid) which aims to relieve headache, sore throat, fever, body aches and pains, and a blocked nose.