英文别名:6-ETHYL-2-METHOXYLNAPHTHALINE;2-Methoxy-6-ethylnaphthalene;Naproxen EP IMpurity J;2-Methoxy-6-ethylnapthalene;Naphthalene,2-ethyl-6-Methoxy-;6-ETHYL-2-METHOXYLPHTHALINE;Naproxen Impurity 10(Naproxen EP Impurity J);2-Ethyl-6-methoxynaphthalene (Ethyl