(2,4)2,5-dimethylphenol sulfate
(2,4)2,5-dimethylphenol sulfate
An aryl sulfate that is 2.4-xylenol in which the phenolic hydrogen has been replaced by a sulfo group, with R1=H, R2=CH3 for the 2.4- and a 2,5-xylenol with R1=CH3,R2=H for the 2.5- entity.