API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Levodopa

EP Impurity A

 (2S)-2-amino-3-(2,4,5-trihydroxyphenyl)propanoic acid Levodopa_EP Impurity A
Levodopa

EP Impurity B

 (2S)-2-amino-3-(4-hydroxyphenyl)propanoic acid (tyrosine) Levodopa_EP Impurity B
Levodopa

Levodopa Related Compound B

 3-methoxytyrosine Levodopa_Levodopa Related Compound B