Proline  is an α-amino acid, it is non-essential amino acid . Phenylalanine contains benzyl side chain.  It is one of 20 standard amino acids

Nutritional Phytochemical Analytical Laboratory

Molecular Weight: 115.13

Molecular Formula:  C₅H₉NO₂

IUPAC Name: (S)-2-pyrrolidinecarboxylic acid

CAS Name: L-Proline

CAS number:  147-85-3

One Letter Code:  P

Three Letter Code: Pro

Proline

Structural Formula

3D Structural Formula