1,3-Benzodioxan-2-carboxylic acid, 6-chloro-4,4-diphenyl-, methyl ester 4H-1,3-Benzodioxin-2-carboxylic acid, 6-chloro-4,4-diphenyl-, methyl ester 6-Chloro-4,4-diphenyl-1,3-benzodioxan-2-carboxylic acid methyl ester 71980-70-6 BRN 5138980