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L-leucine, also known as leucine, is α-amino-γ-methylvaleric acid, α-aminoisocaproic acid, and its molecular formula is C6H13O2N. L-leucine is one of the eight essential amino acids for the human body. It belongs to the aliphatic amino acids in the twenty protein amino acids. Together with L-isoleucine and L-valine, it is called the three major branched chain amino acids. It is an enantiomer with D-leucine, and it is a white glossy hexahedral crystal or a white crystalline powder at room temperature. Odorless, slightly bitter. In the presence of hydrocarbons, it is stable in aqueous mineral acid. Dissolve each gram in 40ml of water and about 100ml of acetic acid. Very slightly soluble in ethanol or ether, soluble in formic acid, dilute hydrochloric acid, alkaline hydroxide and carbonate solutions.

Steroids are the general name of a large class of cyclopentane-dense fully hydrogenated phenanthrene derivatives widely distributed in the biological world, also known as steroids and steroids. Steroid compounds do not contain bound fatty acids and are non-saponifiable lipids; these compounds belong to isoprenoid substances, which are generated by cyclization of triterpenes and then by internal molecular reorganization and chemical modifications.

Steroids are hormones that are naturally produced in the body. Steroid drugs are man-made and similar to the natural hormones made in the body. Steroids used to treat diseases are called corticosteroids. They are different from the anabolic steroids used by some athletes and bodybuilders. Anabolic steroids have very different effects. Bosen Bio is one of the steroid manufacturers in China which can offer types of steroid wholesale.

Vitamin D3 is a fatsoluble vitamin, is used as a precursor for calcium, phosphorus metabolic hormones, it has close relationship with sunshine, so also called the "sunshine vitamin". Vitamin D3 is fat soluble, insoluble in water, can dissolve in fat or fat solvents, high temperature and oxidation in neutral and alkaline solution.

Although carpet has different material and style, having good sound-absorbing, sound insulation, moistureproof effect however. After the families living in the building are carpeted, the noise interference of upstairs and downstairs can be reduced. Carpet still has the effect of cold prevention, heat preservation, especially the bedroom of suitable rheumatic disease person is used. Wool carpet is the top grade in carpet, called the "queen" of interior decoration art. As a professional fabric factory in China, Bluec provides quality custom carpet fabric for sale at great prices!