structural formula business number 0265 molecular formula c9h6o3 molecular weight 162.14 label 7-hydroxy-2h-1-benzopyran-2-one, 7-hydroxy-2h-1-benzopyran-2-one, butylidene-4,5-dihydro-3h-isobenzofuran-1-one numbering system physical property data toxicological data ecological data molecular structure data computing chemical data more properties and stability storage method synthesis method purpose numbering system cas number:93-35-6 mdl number:mfcd00006878 einecs number:202-240-3 rtecs number:gn6820000 brn number:127683 pubchem number:24889947 physical property...