food grade powder retinol vitamin a (cas: 68-26-8)

top quality vitamin a cas: 68-26-8

quick details

name:vitamin a
synonyms:(all-e)-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraen;-1-ol;2,4,6,8-nonatetraen-1-ol, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (all-e)-;21 cfr 182,5930;3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclchexen-1-yl)-2,4,6,8-nonatetraen-1-ol;6,8-nonatetraen-1-ol,3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-4;acon;afaxin
cas:68-26-8
mf:c20h30o
mw:286.45
molecular structure:
purity:102.3%
appearance:yellow-orange powder

specification:

description:

vitamin a is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and severalprovitamin a carotenoids, and beta-carotene. vitamin a has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision. vitamin a is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the light-absorbing molecule,necessary for both low-light (scotopic vision) and color vision. vitamin a also functions in a very different role as retinoic acid (an irreversibly oxidized form of retinol), which is an important hormone-for epithelial and other cells.

in foods of animal origin, the major form of vitamin a is an ester, primarily retinyl palmitate, which is converted to retinol (chemically an alcohol) in the small intestine. the retinol form functions as a storage form of the vitamin, and can be converted to and from its visually active aldehyde form, retinal.

all forms of vitamin a have a beta-ionone ring to which an isoprenoid chain is attached, called a retinyl group. both structural features are essential for vitamin activity.the orange pigment of carrots (beta-carotene) can be represented as two connected retinyl groups, which are used in the body to contribute to vitamin a levels. alpha-carotene and gamma-carotene also have a single retinyl group, which give them some vitamin activity. none of the other carotenes have vitamin activity. the carotenoid beta-cryptoxanthin possesses an ionone group and has vitamin activity in humans.

usage:

vitamin a is used for treating vitamin a deficiency. it is also used to reduce complications of diseases such as malaria, hiv, measles, and diarrhea in children with vitamin a deficiency.

women use vitamin a for heavy menstrual periods,premenstrual syndrome(pms),vaginal infections,yeast infections,"lumpy breasts"(fibrocystic breast disease),and to prevent breast cancer.some women with hiv use vitamin a to decrease the risk of transmitting hiv to the baby during pregnancy,childbirth,or breast-feeding.

men use vitamin a to raise as their sperm count.

some people use vitamin a for improving vision and treating eye disorders including age-related macular degeneration(amd),glaucoma,and cataracts.

vitamin a is also used for skin conditions including acne, eczema, psoriasis, cold sores, wounds,burns,sunburn,keratosis follicularis(darier's disease), ichthyosis(noninflammatory skin scaling), lichen planus pigmentosus, and pityriasis rubra pilaris.

vitamin a is also used for shigellosis, diseases of the nervous system, nose infections, loss of sense of smell, asthma, persistent headaches, kidney stones, overactive thyroid, iron-poor blood (anemia), deafness, ringing in the ears, and precancerous mouth sores (leukoplakia).

other uses include preventing and treating cancer, protecting the heart and cardiovascular system, slowing the aging process, and boosting the immune system.

vitamin a is applied to the skin to improve wound healing, reduce wrinkles, and to protect the skin against uv radiation.