L-Methionine

L-Methionine

Chemical Name:Amino methylthiohufanoic acid
Molecular Formula:C5H11NO2S
Molecular Weight:149.21
Cas No:[63-68-3]
Appearance:White, lustrous, or a white ,crystalline powder. It has a slight, characteristic odor. It is soluble in water, in alkali solutions, and in dilute mineral acids. It is slightly soluble in alcohol and practically insoluble in ether.
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Product Details

First discovered by American bacteriologist John Howard Mueller in 1921, L methionine, or methionine, is an essential amino acid found in the body used to make proteins and peptides. It’sfound in meat, fish and dairy products, as well as nuts and grains. Think protein foods, and you will likelyfind methionine.

Chemical Name:

Amino methylthiohufanoic acid

Structure Formula:

Molecular Formula:

C5H11NO2S

Molecular Weight:

149.21

Cas No:

[63-68-3]

Characteristics:

White, lustrous, or a white ,crystalline powder. It has a slight, characteristic odor. It is soluble in water, in alkali solutions, and in dilute mineral acids. It is slightly soluble in alcohol and practically insoluble in ether.

Quality Standards:

AJI97

Item

Specification (AJI97)

Appearance

White crystals or crystalline powder

Assay, % (on dry matter)

98.5~101.5

Specific rotation

+21.9°~+24.1°

pH value

5.6~6.1

Loss on drying, %

≤0.3

Heavy metals, %

≤0.0015

Residue on ignition, %

≤0.4

Chloride,%

≤0.05

Sulfate,%

≤0.03

Arsenic, %

≤0.00015

Iron, %

≤0.003

DL-Methionine

The Characteristics and Uses:

  One composition of amino acid infusion. It is an essential amino acid for human body. And it is also used as food additive.

Package and Transport:

  This product is contained in a double-layer package, the inner layer being a sealed non-poisonous polyethylene bag or aluminium foil, and the outer layer being a 25kg drum. Packages may be arranged in accordance with customer’s requirements.

Storage:

  Stored in dry, clean and ventilated places. Protect it from moisture, heat or sunshine. In order to avoid pollution, it is prohibited to place this product together with poisonous or harmful substances. The expiry date is for two years.

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