((5-Chloro-3-(2-methylphenol)-4-oxo-4H-1-benzopyran-7-yl)oxy)acetic acid 112953-47-6 Acetic acid, ((5-chloro-3-(2-methylphenyl)-4-oxo-4H-1-benzopyran-7-yl)oxy)- DR 3438 DR-3438