3-Hydroxy-4[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt

CAS: 6226-79-5

Ref. 3D-FH46942

Product Information

• Name: 3-Hydroxy-4[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt
• Synonyms: Ponceau SCI 27195, 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:4), 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodium salt, 3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid, tetrasodium salt, Acid red 112, Ponceau Red S, Ponceau S Extra, Ponceau S solution, Tetrasodium 3-Hydroxy-4-(2-Sulphonato-4-(4-Sulphonatophenylazo)Phenylazo)Naphthalene-2,7-Disulphonat, tetrasodium 3-hydroxy-4-[(E)-{2-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]naphthalene-2,7-disulfonate, C.I. Acid Red 112, Ponceau S, C.I. Acid Red 112, tetrasodium salt (8CI), Ponceau S, C.I. Acid Red 112, tetrasodium salt, C.I. Acid Red 112, C.I. 27195

Description

3-Hydroxy-4[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt is a chemical compound that has been used in the diagnosis of proteinuria. It reacts with the α1-acid glycoprotein to form a ponceau dye. The 3HSA can be detected by fluorescence probe, which binds to the sulfonate group on the dye. The reaction mechanism of 3HSA is shown below:

3HSA + α1AG → ponceau dye + H+ + AG

The chemical properties of 3HSA are as follows:

pK = 12.6
logP = 2.6
Baume = 13.6
Tm = -5°C
ΔG° (298 K) = -0.8 kJ/mol

• Brand: Biosynth

Chemical properties

• Molecular weight: 760.57 g/mol
• Formula: C₂₂H₁₂N₄O₁₃S₄Na₄
• Purity: Min. 95%
• Color/Form: Red Powder