Product Name: L-Serine

Synonyms: Ser; Serine; H-Ser-OH; L-(+)-SERINE; L-(-)-SERINE; 3-Hydroxy-alanine; L-Serine, USP Grade; 8-HYDROXY-L-ALANINE; 2-Amion-3-hydroxypropionicacid; L-2-Amino-3-hydroxypropionic acid; (s)-2-amino-3-hydroxypropanoicacid; (S)-2-Amino-3-hydroxypropionic acid; (S)-2-Amino-3-hydroxypropanoic acid; alpha-amino-beta-hydroxypropionicacid; alpha-Amino-beta-hydroxypropionic acid; Propanoic acid, 2-amino-3-hydroxy-, (S)-

CAS No.: 56-45-1

EINECS No.: 200-274-3 

Molecular Formula: C3H7NO3

Molecular Weight: 105.09 

Brief Introduction:

L-serine‌ is an important amino acid, with CAS number: 56-45-1 and molecular formula: C3H7NO3. It is an important intermediate metabolite in organisms, a precursor of various amino acids, nucleotides, choline and phospholipids, and is involved in the synthesis of protein production, lipids, nucleic acids and neurotransmitters. L-serine has a positive effect on brain health and cognitive function, may help control inflammatory reactions in the brain, and repair mental function in disease states. It also plays an important role in strengthening immune function and regulating regular sleep.

Physical & Chemical Properties:

Characteristics	White crystal or crystalline powder, odorless, sweet
Relative Density	1.6
Boiling Point	197.09℃ (Rough Estimate)
Melting Point	222℃ (dec.) (lit.)
Flashing Point	150℃
Refractive Index	1.4368 (Estimate)
Acidity Coefficient	2.19 (At 25℃)
Water Solubility	250 g/L (At 20℃)

Specifications of our L-Serine EP Grade (Suitable for Medical Use):

Characteristics	White or nearly white crystalline powder or colourless crystals, slightly sweet taste, easily soluble in water, insoluble in ethanol
Identification	It complies with the spectrum obtained with Serine
Specific Optical Rotation[α]D20	+14.0° ~ +16.0° (on dried basis)
Loss on Drying	Not more than 0.5%
Residue on Ignition	Not more than 0.1%
Chloride	Not more than 200 ppm
Sulfate	Not more than 300 ppm
Heavy Metals	Not more than 0.001%
Iron	Not more than 10 ppm
Related Substances (TLC)	Any other impurity: ≤0.2%
	Total impurities: ≤0.5%
Chiral Assay	/
Assay	98.5% ~ 101.0%

Specifications of our L-Serine USP Grade (Suitable for the Food Industry):

Characteristics	White crystals with sweet taste; soluble in water, hardly soluble in anhydrous ethanol and ether
Identification	It complies with the spectrum obtained with Serine
Specific Optical Rotation[α]D20	+14.0° ~ +15.6° (on dried basis)
Loss on Drying	Not more than 0.2%
Residue on Ignition	Not more than 0.1%
Chloride	Not more than 0.05%
Sulfate	Not more than 0.03%
Iron	Not more than 0.003%
Related Substances (TLC)	Any other impurity: ≤0.5%
	Total impurities: ≤2.0%
Chiral Assay	/
Assay	98.5% ~ 101.5%

Specifications of our L-Serine AJI92 Grade (Suitable for the Cosmetics Industry):

Description	White crystalline or crystalline powder, slightly sweet taste. The product is soluble in water and formic acid, almost insoluble in ethanol and ether. Dissolve in dilute
Identification	The IR absorption spectrum of this product should be consistent with the standard product spectrum or the reference spectrum (spectrum set 917)
Assay	99.0% ~ 101.0% (on dried basis)
Chiral Assay	/
Specific Rotation[α]D20	+14.4° ~ +15.5°(on dried basis)
pH Value	5.2 ~ 6.2
State of Solution	Not less than 98.0%
Chloride (Cl)	Not more than 0.020%
Ammonium (NH4+)	Not more than 0.02%
Sulfate (SO4)	Not more than 0.020%
Arsenic (As)	Not more than 1 ppm
Iron (Fe)	Not more than 10 ppm
Other amino acids (TLC)	Not more than 0.2%
Loss on Drying	Not more than 0.20%
Residue on Ignition	Not more than 0.10%
Heavy Metals	Not more than 10 ppm

L-Serine is Widely Used in Medicine, Food, Cosmetics and Other Industries:

1) As biochemical reagents and food additives;

2) Nutritional supplements, the main role of skin stratum corneum to maintain moisture, key additives in advanced cosmetics;

3) It can be used for biochemical and nutritional research, and can also be used as a raw material for the synthesis of cycloserine;

4) Serine can promote the metabolism of fat and fatty acid and help maintain the immune system;

5) Synthesize precursors of purine, thymine and choline;

6) It has the function of stabilizing the pH value of eye drops, and is non-irritating after eye drops; it is one of the important natural moisturizing factors (NMF).

Packaging:

0.5kg/Aluminum foil bag, 1kg/Aluminum foil bag, 25kg/Fibre drum or according to the specific requirements from customers.

Storage Conditions:

Preserved in unopened original containers in a cool dry place before using; kept away from sunlight, heat and moisture.

Shelf Life:

24 months if stored under above mentioned conditions.