Keywords: Isophthalic acid 200.svg validSVG Structure of isophthalic acid Struktur von Isophthalsäure Own 2014-02-23 Emeldir <span class signature-talk >talk</span> Chemical structure verified https //upload wikimedia org/wikipedia/commons/7/72/Isophthalic_acid_200 svg 1S/C8H6O4/c9-7 10 5-2-1-3-6 4-5 8 11 12/h1-4H H 9 10 H 11 12 QQVIHTHCMHWDBS-UHFFFAOYSA-N 121-91-5 PD-chem Isophthalic acid |