Retinol

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1.We supply vitamin a oil 2.High purity copetitive price 2.Brilliantyellow to Light Red liquite 3.Content >=1,000,000IU/G    Description Retinol is one of the animal forms of vitamin A. It is a diterpenoid and an alcohol. It is convertible to other forms of vitamin A, and the retinyl ester derivative of the alcohol serves as the storage form of the vitamin in animals.When converted to the retinal (retinaldehyde) form, vitamin A is essential for vision, and when converted to retinoic acid, is essential for skin health, teeth remineralization and bone growth. These chemical compounds are collectively known as retinoids, and possess the structural motif of all-trans retinol as a common feature in their structure. Structurally, all retinoids also possess a β-ionone ring and a polyunsaturated side chain, with either an alcohol, aldehyde, a carboxylic acid group or an ester group. The side chain is composed of four isoprenoid units, with a series of conjugated double bonds which may exist in trans- or cis-configuration.[1]Retinol is produced in the body from the hydrolysis of retinyl esters, and from the reduction of retinal. Retinol in turn is ingested in a precursor form; animal sources (liver and eggs) contain retinyl esters, whereas plants (carrots, spinach) contain pro-vitamin A carotenoids (these may also be considered simply vitamin A). Hydrolysis of retinyl esters results in retinol, while pro-vitamin A carotenoids can be cleaved to produce retinal by carotene dioxygenase in the intestinal mucosa. Retinal, also known as retinaldehyde, can be reversibly reduced to produce retinol or it can be irreversibly oxidized to produce retinoic acid, which then cannot function as the vitamin in the eye. 1 Purity >=1,000,000IU/G2 Quality Standards USP303 Characteristic Brilliantyellow to Light Red Oil Solution.4 Function(1)Prevent night blindness and vision loss; it’s helpful to the treatment of eye diseases. (VA c...1.vitamin A oil,CAS No.68-26-82.Appearanceyellow powder3.Assay99%4.Best price,supply MOQ   ItemsStandardsResultsAppearance Yellow crystal or liquidQualifiedIdentificationPositiveQualifiedAssay1.7 M IU/G Min1.79 M IU/GAbsorbance Ratio(325nm)0.85 Min0.9Peroxide Value1.0 ml of 0.01 mol/L Na2S2O3 Max0.38 mlAcid Value2.0 Max0.8Related SubstancesA300/A326≤0.600.57ResultComply with EP6/USP32 standard   Shoud ANY interest to get more specification,certificate of Analysis,our price or other detail,just contact with us,ThanksMobile+86 15515862680ContactsJessica