Leucine is an essential amino acid, it contains hydrocarbon side chain. Leucine is  one of 20 standard amino acids.

Nutritional Phytochemical Analytical Laboratory

Molecular Weight: 131.17

Molecular Formula:  C₆H₁₃NO₂

IUPAC Name: (S)-2-amino-4-methylpentanoic acid

CAS Name: L-leucine

CAS number:  61-90-5

One Letter Code:  L

Three Letter Code: Leu

Leucine

Structural Formula

3D Structural Formula