1,4-Bis(2-methyl-4-chlorophenoxyacetoxy)-2-butyne 14569-74-5 2-Butyne-1,4-diol, bis(4-chloro-2-methylphenoxyacetate) Acetic acid, [(4-chloro-o-tolyl)oxy]-, 2-butynylene ester NSC138843 WLN: GR C1 DO1VO2UU2OV1OR B1 DG