CAS 13328-85-3 appears in our catalog under these names: 3,4-Dihydro-1h-2-benzopyran-1-carboxylic acid, 95%, 3,4-Dihydro-1H-isochromene-1-carboxylic acid, 3,4-Dihydro-1H-isochromene-1-carboxylic acid 98%, 3，4-Dihydro-1H-isochromene-1-carboxylic acid, 98%, 98%, ISOCHROMAN-1-CARBOXYLIC ACID, 97%. Offered by: Combi-blocks, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 5g, 2g, 10g, 100mg.