Lysine is an essential amino acid, Leucine is  one of 20 standard amino acids.

Nutritional Phytochemical Analytical Laboratory

Molecular Weight: 146.19

Molecular Formula:  C₆H₁₄N₂O₂

IUPAC Name: (S)-2,6-diaminohexanoic acid

CAS Name: L-Lysine

CAS number:  56-87-1

One Letter Code:  K

Three Letter Code: Lys

Lysine

Structural Formula

3D Structural Formula