(4-Methoxyphenoxy)acetic acid 1877-75-4 2-(4-Methoxyphenoxy)acetic acid 4-Methoxyphenoxyacetic acid AI3-10592 Acetic acid, (4-methoxyphenoxy)- Acetic acid, (p-methoxyphenoxy)- EINECS 217-513-2 NSC 4255 NSC 45652