structural formula business number 0256 molecular formula c17h13no2 molecular weight 263.29 label naphthol as, ice dye coupling component 2, naphthol as, ice stain phenol as, naphto as, 3-hydroxy-n-phenyl-2-naphthalenecarboxamide 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...