"phthalic anhydride"@en-us . "14768765-n"^^ . . "113926281"@en-us . . "0"^^ . . . "114768765"^^ . "a white cyclic anhydride"@en-us . . "phthalic anhydride"^^ . . . "110588608"@en-us . . "0"^^ . .