Pharmaceutical intermediates VITAMIN A all-trans-Retinol CAS 68-26-8 Palmitate Retinyl Retinol Acetate Vitamin a Oil

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English name: all-trans-Retinol CAS Number: 68-26-8 Molecular formula: C20H30O Molecular weight: 286.45 EINECS Number: 200-683-7 Melting point: 61-63°C(lit.) Boiling point: 368.81°C (rough estimate) Density 0.9933 (rough estimate) Refractive index: 1.641 Flash point: -26°C Storage conditions: -20°C Solubility: Chloroform(Slightly), Methanol(Slightly) Acidity coefficient: (pKa) 14.09 ± 0.10 (Predicted) Form:crystalline Color: yellow to orange

Retinol is a fat-soluble vitamin, which exists in animal foods in the form of free aldehydes or esters, and is abundant in fat, protein, milk, and liver. Plants do not contain vitamin A, but the precursor of vitamin A (provitamin A) exists in carrots, tomatoes and other vegetables. After being absorbed by animals, it can be converted into vitamin A. Retinol is necessary for maintaining the stability of human growth, development, reproduction, and cell membranes, and plays an important role in the visual process. Retinal is consumed in the body due to continuous metabolism, and needs to be supplemented by oxidized vitamin A in time. Vitamin A is related to the normal structure and function of upper energy and lower energy cells. When it is lacking, it will lead to conjunctiva, dry cornea, inflammation, and even blindness. It will also cause damage to the respiratory epithelium, which is prone to respiratory infections, hair loss, and infant development. delay etc. As a nutritional supplement, vitamin A oil is a fatty oil obtained from the liver and pylorus pylorus of aquatic animals or its concentrate. Crush the fresh fish liver and pylorus pendant, add 1-2% sodium hydroxide solution to pH 8-9. Retinol can be used in sausage, margarine, bread, dairy products, fruit juice powder, peanut butter, etc.

Diluted color flake crystal, melting point 62-64℃, boiling point 120-125℃ (0.667Pa). Soluble in grease or organic solvent, insoluble in water. Good thermal stability, relatively stable under alkaline conditions, unstable under acidic conditions. It has a characteristic blue reaction in the case of antimony trichloride, and is easily damaged by ultraviolet rays and oxygen in the air. It can be protected when it coexists with vitamin C.

1. Vitamin A is a component of photosensitive substances in visual cells, which can ensure the integrity and health of epithelial tissue structure and promote the development and growth of the body. When it is deficient, growth and development will be blocked, reproductive function will decline, and "night blindness" will be easily caused. Generally, retinol acetate [127-47-9] is added to the feed. 2. For pharmaceutical tablets and capsules, as vitamin feed additives in the feed industry 3. Vitamin A is a component of photosensitive substances in visual cells, and lysine is an essential amino acid for the human body, which can maintain the integrity and health of the epithelial tissue structure and promote the growth and development of the body. When it is lacking, growth and development will be blocked, reproductive function will decline, and "night blindness" will be easily caused. 4. Vitamin A is a fat-soluble vitamin, which exists in animal foods in the form of free aldehydes or esters, and is abundant in fat, protein, milk, and liver.