1,7-Di(2-methoxyphenoxy)-2,6-dihydroxy-4-oxaheptane;Guaifenesin EP impurity C;Guaifenesin Impurity 3(Guaifenesin EP Impurity C);2-Propanol, 1,1-oxybis[3-(2-methoxyphenoxy)-;3,3-oxybis(1-(2-methoxyphenoxy)propan-2-ol)
1,7-Di(2-methoxyphenoxy)-2,6-dihydroxy-4-oxaheptane;Guaifenesin EP impurity C;Guaifenesin Impurity 3(Guaifenesin EP Impurity C);2-Propanol, 1,1-oxybis[3-(2-methoxyphenoxy)-;3,3-oxybis(1-(2-methoxyphenoxy)propan-2-ol)