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


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

RESERPINE

RESERPINE Brand Names : Alserin; Austrapine; Crystoserpine; Eskaserp; Hiserpia; Orticalm; Quiescin; Rau-red; Reserpex; Reserpoid; Rivasin; Roxinoid; Sandril; Sedaraupin; Serfin; Serolfia; Serpanray; Serpasil; Serpasol; Serpate; Serpen; Serpine; Serpiloid. Reserpine is an alkaloid obtained from the roots of certain species of Rauuolfia (Apocynaceae) mainly Rauuvolfia serpentina and R. vomitoria, or by synthesis. It occurs as odourless, small, white or pale buff to slightly yellow coloured crystals or crystalline powder, m. p. 264-265° (decomp). It is very sparingly soluble in water; freely soluble in chloroform, methylene chloride, glacial acetic acid; soluble in benzene and ethylacetate; slightly soluble ܗܘ in acetone, methanol, alcohol, ether and in aqueous solutions of acetic and citric acids. Upon standing most solutions acquire a yellow colour and pronounced fluorescence, especially after the addition of acid or upon exposure to light. It is stored in airtight containers...
Read more