API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Thiamine Impurity A

Thiamine Impurity A

3-[(4-Amino-2-methylpyrimidin-5-yl)methyl]-4-methyl-5-[2-(sulfonatooxy)ethyl] thiazolium thiamine impurity A
Thiamine Impurity E

Thiamine Impurity E

3-[(4-Amino-2-methylpyrimidin-5-yl)methyl]-5-(2-hydroxyethyl)-4-methylthiazol-2(3H)-thione thiamine imp e
Thiamine Impurity D

Thiamine Impurity D

3-[(4-Amino-2-methylpyrimidin-5-yl)methyl]-5-(2-hydroxyethyl)-4-methylthiazol-2(3H)-one thiamin
Thiamine Impurity F

Thiamine Impurity F

3-[(4-Amino-2-ethylpyrimidin-5-yl)methyl]-5-(2-hydroxyethyl)-4-methylthiazolium bromide hydrobromide thiamin f
Thiamine Impurity G

Thiamine Impurity G

5-[2-(Acetyloxy)ethyl]-3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-4-methylthiazolium chloride hydrochloride thiaminnnn