R2,00
Synonym: Tetrasodium 4,5-dihydroxy-3-[(o-sulfophenyl)azo]naphthalene-2,7-disulfonate CAS Number: 3618-43-7 Molecular Formula: C₁₇H₁₂N₂Na₄O₉S₃ Molecular Weight: 598.43 g/mol