Also Called: 2,7-Naphthalenedisulfonic acid, 5-[(5-chloro-2-fluoro-6-methyl- 4-pyrimidinyl)amino]-4-hydroxy-3-[(2-sulfophenyl )azo]-, sodium salt;2,7-Naphthalenedisulfonic acid, 5-[(5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, sodium salt;2,7-Naphthalenedisulfonic acid, 5-[(5-chloro-2-fluoro-6-methyl-4-pyrimidinyl)amino]-4-hydroxy-3-[2-(2-sulfophenyl)diazenyl]-, sodium salt (1:?)