Synonyms
1,2-Dihydroxycyclobutene-3,4-dione; 1,2-Diketo-3,4-dihydroxycyclobutene; 3,4-Dihydroxy-3-cyclobuten-1,2-dion; 3,4-Dihydroxy-3-cyclobutene-1,2-dione; 3,4-Dihydroxy-cyclobutene-1,2-dione; Cyclobutene-1,2-dione, 3,4-dihydroxy-; Dihydroxycyclobutenedione; Quadratic acid; Quadratsaeure; Squaric acid; 3-Cyclobutene-1,2-dione, 3,4-dihydroxy-; Cyclobutenedione, dihydroxy- (8CI); [ChemIDplus] 1,2-Dihydroxycyclobutenedione; Diketocyclobutenediol; [Merck Index]
Sources/Uses
Used to make pharmaceutical intermediates, squarylium dyes, and photoconducting squaraines; The dibutylester is used as a contact sensitizer in the treatment of alopecia and warts; [Merck Index]