4-Azobenzenehydrazine-1-sulfonic acid

AZOBENZENEPHENYLHYDRAZINE SULFONIC ACID

2-(p-(Phenylazo)phenyl)hydrazinesulfonic acid

1-(4-PHENYLAZOPHENYL)HYDRAZINE-2-SULFONIC ACID

2-[4-(Phenylazo)phenyl]hydrazine-1-sulfonic acid