1,3-Benzenedicarboxaldehyde, 4-hydroxy-5-methoxy- (9CI) 2931-90-0 4-08-00-02803 (Beilstein Handbook Reference) 4-Hydroxy-5-methoxyisophthalaldehyde 4-Hydroxy-5-methoxyisophthalic dialdehyde 5-Formylvanillin Aldehyde hydroxy-4 methoxy-3 isophthalique [French] BRN 1955742 Dialdehyde vanillique [French] EINECS 220-901-4 ISOPHTHALDEHYDE, 4-HYDROXY-5-METHOXY- NSC 41797 NSC 43298