Chinese alias: L-α-aminoisobutyl acetic acid; L-Leucine; L-α-aminoisobutin; (S)-2-Amino-4-methylpentanoic acid; L-flash white amino acids; L-2-amino-4-methylpentanoic acid; L-α-aminoisocaproic acid; aminoisocaproic acid;

Product Name:L-Leucine; Norvaline, 4-methyl-; FEMA No. 3297; 2-Amino-4-methylpentanoic acid (L); L-Leuzin; Pentanoic acid, 2-amino-4-methyl-;

CAS No 61-90-5

EINECS: 200-522-0

Molecular Formula: C6H13NO2

Melting Point: 286-288 °C

Boiling Point: 225.8 °C 

Density: 1.035

L-leucine is a white crystal or crystalline powder, is a non-polar amino acid, slightly bitter taste, soluble in water, solubility at 20 °C, 25 °C is 23. 7g/L and 24. 26g/L, acetic acid (10.9g/L), dilute hydrochloric acid, alkali solution and carbonate solution, slightly soluble in alcohol (0. 72g/L), insoluble in ether, sublimated when heated to 145^r 148 °C, decomposed at 293-295 0C, specific gravity 1. 29 (180C), specific rotation [a] D20 is +14. 5^-+16. 0 (6mo1/L Hcl,C=1), isoelectric point 5. 98。

Function: It is an essential amino acid, and the amount required by adult men is 2.2g/d. It is necessary for the normal growth of infants and young children and the maintenance of normal nitrogen balance in adults.

Limit: 1. 6.4% of the total protein mass in food.

2. It is safe to use in food.