Articaine

Articaine impurrity A
Articaine impurrity A:
Methyl 3-[[2-(propylamino)acetyl]amino]-4-methyl-thiophene -2- carboxylate hydrochloride;
 C12H19CIN2O3S ; Mol. Wt.:306.81 ;
Articaine impurrity E
Articaine impurrity E:
Methyl 4-Methyl-3-[[(2RS)-2-[(1-methylethyl)amino]-propanoyl]amino]thiophene-2-carboxylate Hydrochloride;
C13H21CIN2O3S ; Mol. Wt.:320.84 ;