Dimethylthioxanthones formed by condensation of 2-mercaptobenzoic acid with o-, or m-xylene in sulfuric acid.

~%

~%

~%

~%

~80%

~43%

~%

~%

~13%

~45%

~%

~%

~%

~%

~%

~%

~%

~67%

~%

~%

~%

~%