Squaric acid

Molecular Formula: C₄H₂O₄

InChI: InChI=1/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H

InChIKey: InChIKey=PWEBUXCTKOWPCW-UHFFFAOYAC
SMILES: C1(=C(C(=O)C1=O)O)O

Names:
    CCRIS 6793
    Cyclobutenedione, dihydroxy- (8CI)
    Dihydroxycyclobutenedione
    EINECS 220-761-4
    Quadratic acid
    Squaric acid
    1,2-Dihydroxycyclobutene-3,4-dione
    1,2-Diketo-3,4-dihydroxycyclobutene
    2,3-dihydroxycyclobut-2-ene-1,4-dione
    3,4-Dihydroxy-cyclobutene-1,2-dione
    3-Cyclobutene-1,2-dione, 3,4-dihydroxy-

Registries:
    PubChem CID 17913
    PubChem ID 161026