{-CH2CH[NHSO2C6H4N=NC6H3(OH)CO2NA]-}N
{-CH2CH[NHSO2C6H4N=NC6H3(OH)CO2NA]-}N
POLY(1-(4-(3-CARBOXY-4-HYDROXYPHENYLAZO&
POLY(1-(4-(3-CARBOXY-4-HYDROXYPHENYLAZO&;POLY(1-(4-(3-CARBOXY-4-HYDROXYPHENYLAZO) -BENZENESULFONAMIDO)ETHANEDIYL,NA),TECH
[-CH2CH[NHSO2C6H4N=NC6H3(OH)CO2Na]-]n