phenylalanine. Structural chemical formula
Keywords
structural,
chemical,
formula,
skeletal,
essential,
amino,
acid,
vector,
illustration,
peptide,
element,
symbol,
ball,
scientific,
molecular,
structure,
chemistry,
molecular,
science,
biochemistry,
medicine,
biology,
model,
isolated,
atomic,
compound,
nitrogen,
oxygen,
protein,
carbon,
composition,
atom,
hydrogen,
icon,
line,
atom,
bond,
organic