acetyl derivative (11) have definite melting points, comparison was made of the pyridinium-4- ace-tylamino-2-acetoxybenzenesulfonate (111) derivatives. The products made by the above method and that obtained from the sulfonation of m-aminophenol followed by the action of acetic anhydride and pyridine were shown to be identical by a mixed melting point study. This clearly indicates that the structure reported in the Oehler patent is in error and ...
