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  • Chemical Name:L-Alanine
  • CAS No.:56-41-7
  • MF:C3H7NO2
  • MW:89.09
  • Purity:>98% or As customer requested
  • Color: White to almost white
  • Water Solubility: 166.5 g/L (25 ºC)
  • Product Categories: APIs; Amino acid; alpha-Amino Acids; Amino Acids;Biochemical Engineering
  • Test method: HPLC


What is L-Alanine?

L-Alanine is a colorless to white crystalline powder, soluble in water, ethanol, but insoluble in ether and acetone. 

Alanine is a small non-essential amino acid in humans, Alanine is one of the most widely used for protein construction and is involved in the metabolism of tryptophan and vitamin pyridoxine. Alanine is an important source of energy for muscles and central nervous system, strengthens the immune system, helps in the metabolism of sugars and organic acids, and displays a cholesterol-reducing effect in animals. 

Basic information

Product Name: L-Alanine
Synonyms: (S)-2-Aminopropanoic acid; (s)-2-aminopropanoicacid; Aspartic Acid Impurity 6; 2-Aminopropanoic acid; 2-Aminopropanoicacid; 
CAS: 56-41-7
MW: 89.09
EINECS: 200-273-8
Product Categories: Amino Acids; food additive; food flavor; Biochemical Engineering; APIs
Chemical Structure


Chemical Properties   

Melting point  314.5 °C
alpha  14.5 º (c=10,6N HCl,dry sub.)
Boiling point  212.9±23.0 °C(Predicted)
density  1,432 g/cm3
refractive index  1.4650 (estimate)
storage temp.  2-8°C
solubility  H2O: 100 mg/mL
pka 2.34(at 25℃)
form  powder
color  White to almost white
PH 5.5-6.5 (100g/l, H2O, 20℃)
optical activity [α]20/D +14.0±1°, c = 5% in 5 M HCl
Water Solubility  166.5 g/L (25 ºC)
λmax λ: 260 nm Amax: ≤0.03
λ: 280 nm Amax: ≤0.02
Merck  14,204
BRN  1720248
Stability: Stable. Incompatible with strong oxidizing agents.
Usage And Synthesis

Chemical Properties A white, odorless powder having a sweet taste
Chemical Properties White crystalline powder
Occurrence Natural constituent of protein in plants and animals; found in apple, beef, carob, pea, soybean, wine and zucchini

L-alanine Uses:            

L-alanine is an important raw material for the synthesis of VB6, and it is one of the components of the nutrient “Essential Amino Acid Nutrition Infusion”.

Cysteine is mainly used in medicines such as liver medicine, antidote, and expectorant.

Cysteine and its derivatives can be used for liver poisoning and detoxification, antipyretic and analgesic, ulcer treatment, fatigue recovery, infusion and comprehensive amino acid preparations, etc., especially for expectorant,  treatment of bronchitis and phlegm.

Technical Support & Resources

Information provided in the product description is from published literature. Due to the nature of scientific experimentation, your results (e.g., selectivity and effective concentrations) or specific application for this product may differ. If you have questions about how this product fits your application, please contact our technical support staff.

MSDS: MSDS available.

COA: COA can be available if you send us inquiry.

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Packaging and Shipping




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