33534-04-2
4-(5-chloro-2-hydroxy-phenyl)-4-oxo-trans-crotonic acid
→
~87%
52011-76-4
6-chloro-4-oxo-2,3-dihydrochromene-2-carboxylic acid
40026-24-2
6-氯-3,4-二氢-2H-1-苯并吡喃-2-羧酸