SQUARYLIUM DYE III

1,3-bis(4-(dimethylamino)phenyl)-2,4-di-hydroxycy

1,3-BIS(4-DIMETHYLAMINO-PHENYL)-2-OXO-CYCLOBUTEYYLIUM-4-OLAT

1,3-BIS(4-(DIMETHYLAMINO)PHENYL)-2,4-DI- HYDROXYCYCLOBUTENEDIYLIUM DIHYDROXIDE

1,3-BIS[4-(DIMETHYLAMINO)PHENYL]-2,4-DIHYDROXYCYCLOBUTENEDIYLIUM DIHYDROXIDE, BIS(INNER SALT)

1-(4-Dimethylamino-phenyl)-3-(4-dimethylimmonium-cyclohexa-2,5-dien-1-ylidene)-2-oxo-cyclobuten-4-olate