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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

Purity:99%

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-like growth factor 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.

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Shanghai Yijing Industrial Co., Ltd., is a leading Chinese chemical supplier specialized in hormone steroid powders, Steroids injectable liquids, peptide, chemical synthetic drug, Pharmaceutical Raw Materials and veterinary medicine. Our company integrates R&D, producing, operating and marketing into an organic whole. We have authority of export and import, and have experience of export for more than 10 years.  Our company strives to maintain and improve every phase of our business and satisfy needs of our customers. All products at our site are available to be shipped - that means we have them in stock and can ship them to you within 48 hours after payment clearance.  With rich experience online we offer highest delivery guarantee. You will make sure that customer satisfaction and assurance is priority number one. Also discounts are available for our second-time customers. You can count on our reliability. We have a remarkable service and all our client\' S needs are satisfied. If you have any questions you may always contact me by email or phone and we will find a solution to any difficulty that will suit you.  High quality, best price, first-class service, high successful delivery rate, we have stock, so we can delivery quickly at the very day when payment is arrived.  Welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!