英文同义词: | 3,4-Dichloro-3-cyclobutene-1,2-dione;Squaric acid dichloride;3,4-dichlorocyclobut-3-ene-1,2-quinone;1,2-Dichloro-1-cyclobutene-3,4-dione;Dichlorocyclobutenedione;Quadratic acid dichloride;Squaryl dichloride;3-Cyclobutene-1,2-dione,3,4-dichloro- |