The molecule is a phenolate anion that is the conjugate base of 3,6-dichlorocatechol, obtained by deprotonation of one of the twophenolic hydroxy groups. Major structure at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a 3,6-dichlorocatechol.
3,6-dichloro-2-hydroxyphenolate