Histidine is an amino acid most people get from food. It's used in growth, repair of damaged tissues, and making blood cells.  It helps protect nerve cells. It's used by the body to make histamine.

L-histidine (HIS) is an essential amino acid with unique roles in proton buffering, metal ion chelation, scavenging of reactive oxygen and nitrogen species, erythropoiesis, and the histaminergic system.

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Aspartic acid comes in two forms: L-aspartic acid and D-aspartic acid. L-aspartic acid becomes part of proteins synthesized in the body and is responsible for encouraging the production of antibodies that support the function of the body's immune system. D-aspartic acid is not used to synthesize proteins.

Aspartic acid, is an α-amino acid that is used in the biosynthesis of proteins. Like all other amino acids, it contains an amino group and a carboxylic acid.

L-Glutamine is an essential amino acid that is a crucial component of culture media that serves as a major energy source for cells in culture. L-Glutamine is very stable as a dry powder and as a frozen solution.

Glutamine might help gut function, the immune system, and other essential processes in the body, especially in times of stress. It is also important for providing "fuel" (nitrogen and carbon) to many different cells in the body.

LEAD Chromate (PbCrO4) is a chemical compound, a chromate of lead. 

It has a vivid yellow color and is practically insoluble in water and as a result,

is used in paints under the name "chrome yellow and in many other uses and Available in 25 kg net in hdpe bag.

Lead (II) Chromate (PbCrO4) is a chemical compound, a chromate of lead. It has a vivid yellow color and is practically insoluble in water and as a result, is used in paints under the name "chrome yellow and in many other uses and Available in 25 kg net in hdpe bag.

L-Cysteine hydrochloride monohydrate (LCHCMH) is a water soluble salt of the non-essential amino acid, L-cysteine. It is widely employed in the medicine industry. The thermodynamic features of a solution of LCHCMH in water have been reported.

Magneson reagent - The Magneson reagent is a test that determines the presence of magnesium in a solution. It's an azo dye that's used as a spot test reagent and produces a blue lake when reacted with $ Mg{(OH)_2} $ in a basic solution.Take 1-2 drops of test solution in a spot plate and add 2-3 drops of magneson I reagent (4-(4-Nitrophenylazo)-resorcinol) and add 1 drop of 2M sodium hydroxide NaOH to make it alkaline. Blue colouration or blue precipitate is formed depending on the concentration of magnesium.

Levulinic acid, or 4-oxopentanoic acid, is an organic compound with the formula CH3C(O)CH2CH2CO2H. 

It is classified as a keto acid. This white crystalline solid is soluble in water and polar organic solvents. 

Levulinic acid and its derivatives, like sodium levulinate, are used in organic and natural cosmetic compositions for perfuming, skin conditioning and pH-regulating purposes. They give inherent fresh odor, prevent wrinkles and stabilize formulations and emulsions.

Lithium sulfate is used to treat bipolar disorder (see lithium pharmacology). Lithium sulfate is researched as a potential component of ion conducting glasses. Transparent conducting film is a highly investigated topic as they are used in applications such as solar panels and the potential for a new class of battery.

Lauric acid or systematically, dodecanoic acid, is a saturated fatty acid with a 12-carbon atom chain, thus having many properties of medium-chain fatty acids, is a bright white, powdery solid with a faint odor of bay oil or soap. The salts and esters of lauric acid are known as laurates.

Lead dioxide  LR is used in the production of matches, pyrotechnics, dyes and the curing of sulfide polymers.

It is also used in the construction of high-voltage lightning arresters. 

Lead dioxide is used as an anode material in electrochemistry.

 lead is highly toxic, and utmost care should be used in handling the dry powder pigment to avoid inhaling the dust or ingesting the pigment in any form.

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