API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Guaiacol
2-Methoxyphenol Guaiacol_2-Methoxyphenol
Guaiacol

EP Impurity A

benzene-1,2-diol (pyrocatechol), Guaiacol_EP-Impurity-A
Guaiacol

EP Impurity B

phenol Guaiacol_EP-Impurity-B
Guaiacol

EP Impurity C

1,2-dimethoxybenzene (veratrole), Guaiacol_EP-Impurity-C
Guaiacol

EP Impurity D

2,5-dimethoxyphenol Guaiacol_EP-Impurity-D
Guaiacol

EP Impurity E

methyl benzoate Guaiacol_EP-Impurity-E