Metoprolol EP Impurity - A

[4-(2-methoxyethyl)phenoxy]-2-propanol,1-(Ethylamino)-3; H 173/09; 1-Ethylamino-3-[4-(2-methoxyethyl)phenoxy]propan-2-ol; (2RS)-1-(Ethylamino)-3-[4-(2-methoxyethyl)phenoxy]propan-2-ol; Metoprolol Tartrate Impurity A (IP); 1-(ethylamino)-3-(4-(2-methoxyethyl)phenoxy)propan-2-ol; Metoprolol Related Compound A (USP);