Levodopa

Levodopa Levodopa :

(2S)-2-Amino-3-(3,4-dihydroxyphenyl)propanoic acid ; CAS ; 59-92-7 ; C9H11NO4 ; M.Wt: 197.06;
Levodopa EP Impurity A Levodopa Impurity A :

 

(2S)-2-Amino-3-(2,4,5-trihydroxyphenyl)propanoic acid; CAS : 27244-64-0 ; C9H11NO5 ; Exact Mass: 213.0637 ;
Levodopa EP Impurity B Levodopa Impurity B :

 

(2S)-2-Amino-3-(4-hydroxyphenyl)propanoic acid ; L-Tyrosine ; CAS : 60-18-4 ; C9H11NO3 ; Exact Mass: 181.0739 ;
Levodopa EP Impurity C Levodopa Impurity C:

 

2RS)-2-Amino-3-(4-hydroxy-3-methoxyphenyl)propanoic acid ; CAS : 7636-26-2 ;

C10H13NO4 ; Exact Mass: 211.0845 ;
Levodopa EP Impurity D

Levodopa  Impurity D:

(2R)-2-Amino-3-(3,4-dihydroxyphenyl)propanoic acid ; CAS : 5796-17-8 ; C9H11NO4 ;MW: 197.19 ;;