PSEUDOEPHEDRINE

PSEUDOEPHEDRINE

Brand Names : d-Pseudoephedrine; d- ψ -Ephedrine; d--isoephedrine.



Pseudoephedrine is obtained from Ephedra species; m.p. 119°; sparingly soluble in water (differs from l-ephedrine); freely soluble in alcohol or ether. The drug and its salts are stored in airtight containers and protected from light.




Pseudoephedrine hydrochloride (Brand Names : Novafed; Sinused; Sudafed; Symptom 2), m.p. 181-182°, is a white crystalline powder with a faint characteristic odour; soluble in water, alcohol and chloroform.




Pseudoephedrine sulphate is also a white, odourless crystalline powder.

Uses
It is a sympathomimetic agent , has been used to counteract hypotension associated with anaesthesia; as a mydriatic; in allergic reactions and as a CNS stimulant. Ephedrine salts have been used in the symptomatic relief of nasal congestion  associated with the common cold, hay-fever, sinusitis. But it has less presser activity and central nervous system effects . Pseudoephedrine is a useful bronchodialator , but is much less active in increasing blood pressure .




Comments

Post a Comment

Popular posts from this blog

PROPANDID

PROPANDID Brand Names : Bayer-1420; FBA-1420; TH-2 180; WH-5668. Propanidid, b.p. 210-212°, is a pale greenish-yellow viscous liquid with a slight odour. It is very slightly soluble in water; miscible with alcohol, chloroform and  ether. Propanidid has been used as an  intravenous anaesthetic for rapid induction and for maintenance of anaesthesia of short duration
Read more

Vitamin A2

Vitamin A2 Vitamin A2, ( Brand Names : Retinol 2; 3,4-Didehydroretino Dehydroretinol); all trans, m.p. 17-19; 13-cis, m.p. 73-74°. is found in marine fishes of the family Labridae and in turtles. It exhibits chemical, physical and biological properties identical to vitamin A Vitamin A2 has about 40 per cent of the bioactivity of crystalline vitamin A
Read more

HOMATROPINE

HOMATROPINE Brand Names : Mandelyltropeine, Tropine mandelate. Homatropine is a synthetic alkaloid which is a lower homologue of atropine. It is prepared by the interaction of tropine and mandelic acid. Homatropine, m.p. 99-100°, occurs as colourless, odourless crystals or a white crystalline powder. It is hygroscopic, but only slightly soluble in water; soluble in alcohol, benzene, chloroform, ether, acetone and dilute acids. The hydrobromide or hydrochloride is obained readily from the free base by neutralizing with hydrobromic or hydrochkoric acid. The hydrobromide occurs as colourless, odourless crystals or a white crystalline powder. It is soluble in water and alcohol; slightly soluble in chloroform; very slightly soluble in ether; stored in airtight containers and protected from light. Homatropine methylbromide, m.p. 210-212°, is the tropine methylbromide ester of mandelic acid. It is prepared by treating homatropine with methyl bromide, thus yielding the ...
Read more