CAS 1668-00-4

Arsenazo III

Description:

Arsenazo III, with the CAS number 1668-00-4, is a synthetic organic compound primarily used as a chelating agent and colorimetric reagent in analytical chemistry. It is particularly effective for the detection and quantification of metal ions, especially those of transition metals, due to its ability to form stable complexes. The compound exhibits a distinctive color change upon binding with specific metal ions, making it useful in various analytical applications, including spectrophotometry. Arsenazo III is characterized by its azo dye structure, which contributes to its chromogenic properties. It is soluble in water and exhibits stability under a range of pH conditions, although its performance can be influenced by the presence of competing ions. Safety considerations are important when handling Arsenazo III, as it contains arsenic, which is toxic and poses health risks. Proper laboratory protocols should be followed to mitigate exposure. Overall, Arsenazo III is a valuable tool in analytical chemistry for metal ion detection and quantification.

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

InChI: InChI=1S/C22H18As2N4O14S2/c29-21-18-11(9-16(43(37,38)39)19(21)27-25-14-7-3-1-5-12(14)23(31,32)33)10-17(44(40,41)42)20(22(18)30)28-26-15-8-4-2-6-13(15)24(34,35)36/h1-10,29-30H,(H2,31,32,33)(H2,34,35,36)(H,37,38,39)(H,40,41,42)

InChI key: InChIKey=UQHVTNUJRKELCE-UHFFFAOYSA-N

SMILES: OC=1C2=C(C=C(S(=O)(=O)O)C(N=NC3=C([As](=O)(O)O)C=CC=C3)=C2O)C=C(S(=O)(=O)O)C1N=NC4=C([As](=O)(O)O)C=CC=C4

Synonyms:

• (3E,6E)-3,6-bis[(2-arsonophenyl)hydrazono]-4,5-dioxo-3,4,5,6-tetrahydronaphthalene-2,7-disulfonic acid
• (3Z,6Z)-3,6-bis[(2-arsonophenyl)hydrazono]-4,5-dioxo-3,4,5,6-tetrahydronaphthalene-2,7-disulfonic acid
• (Oxoarsanyl)Oxidanyl
• 2,2'-(1,8-Dihydroxy-3,6-Disulfo-2,7-Naphthalene-Bis(Azo))Dibenzenearsonic Acid Sodium Salt
• 2,2'-(1,8-Dihydroxy-3,6-Disulfonaphthylene-2,7-Bisazo)Bisbenzenearsonic Acid
• 2,2'-[1,8-Dihydroxy-3,6-Disulfo-2,7-Naphthlene-Bis(Azo)Dibenzenearsonic Acid
• 2,7-(Bis(2-Arsonophenylazo))-1,8-Dihydroxynaphthalene-3,6-Disulphonic Acid
• 2,7-(Bis(2-arsonophenylazo))-1,8-dihydroxynaphthalene-3,6-disulfonic
• 2,7-(Bis(2-arsonophenylazo))-1,8-dihydroxynaphthalin-3,6-disulfonsaure
• 2,7-Bis(2,2'-arsonophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid
• 2,7-Bis(2-Arsonophenylazo)-1,8-Dihydroxynaphthalene-3,6-Disulfonic Acid
• 2,7-Bis(2-Arsonophenylazo)-1,8-Dihydroxynaphthaline-3,6-Disulfonic Acid
• 2,7-Bis(2-Arsonophenylazo)Chromotropic Acid
• 2,7-Bis(2-arsonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic acid
• 2,7-Di-O-(Arsonophenylazo)-1,8-Dihydroxynaphthalene-3,6-Disulfonic Acid
• 2,7-Naphthalenedisulfonic acid, 3,6-bis[(2-arsonophenyl)azo]-4,5-dihydroxy-
• 2,7-Naphthalenedisulfonic acid, 3,6-bis[(o-arsonophenyl)azo]-4,5-dihydroxy-
• 2,7-Naphthalenedisulfonic acid, 3,6-bis[2-(2-arsonophenyl)diazenyl]-4,5-dihydroxy-
• 2,7-Naphthalenedisulfonicacid,3,6-bis[(2-arsonophenyl)azo]-4,5-dihydroxy-
• 2,7-bis(2-Arsonophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonicacid,sodiumsalt
• 3,6-Bis[2-(2-arsonophenyl)diazenyl]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid
• 7-Naphthalenedisulfonicacid,3,6-bis[(2-arsonophenyl)azo]-4,5-dihydroxy-2
• Acide 2,7-(Bis(2-Arsonophenylazo))-1,8-Dihydroxynaphtalene-3,6-Disulfonique
• Acido 2,7-(Bis(2-Arsonofenilazo))-1,8-Dihidroxinaftaleno-3,6-Disulfonico
• Arsenazo Iii Sodium Salt
• Arsenazo Iii, Reag.
• Benzenearsonic acid, 2,2'-(1,8-dihydroxy-3,6-disulfo-2,7-naphthylenebisazo)di-
• Nsc 91528
• O-(1,8-Dihydroxy-3,6-Disulfonaphthylene-2,7-Bisazo)Bisbenzenearsonic Acid
• disodium (3E,6E)-3,6-bis[(2-arsonophenyl)hydrazono]-4,5-dioxo-3,4,5,6-tetrahydronaphthalene-2,7-disulfonate

Arsenazo III

CAS: 1668-00-4

Arsenazo III, 1668-00-4, is a metallochrome indicator that is used for detecting calcium levels in plasma and serum. Learn more at Thermo Fisher Scientific.

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Color and Shape: Crystals or powder or crystalline powder, Dark green to dark brown to dark red to black

Molecular weight: 776.36

Ref: 02-J63031

2,7-Bis(2-arsonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic acid

CAS: 1668-00-4

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Purity: 95.0%

Color and Shape: Solid

Molecular weight: 776.3699

Ref: IN-DA0038X6

Arsenazo III

CAS: 1668-00-4

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Purity: (Titration) ≥ 70.0%

Color and Shape: Dark brown to black powder

Molecular weight: 776.37

Ref: 7W-GT9304

Arsenazo III

CAS: 1668-00-4

Arsenazo III

Purity: IND

Molecular weight: 776.374g/mol

Ref: 54-OR98227

Arsenazo III

CAS: 1668-00-4

Arsenazo III is a metal-binding dye that has been shown to bind to the cytosolic calcium ion. The binding of Arsenazo III to calcium has been shown to inhibit the voltage-dependent calcium channels, leading to a decrease in cytosolic calcium concentration. This reduction in cytosolic calcium is associated with energy metabolism and human serum titration calorimetry experiments. The binding of Arsenazo III to calcium is also responsible for its light signal. Arsenazo III binds to copper chloride and forms an insoluble precipitate when reacted with acidic solutions. This reaction can be used for analytical purposes as it produces a quantifiable end-point with plasma mass spectrometry.

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Purity: (%) Min. 85%

Molecular weight: 776.37 g/mol

Ref: 3D-FA47009

Arsenazo III [Spectrophotometric reagent for U, Th, Zr and other metals, Indicator for the precipitation titration of SO4 with Ba]

CAS: 1668-00-4

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Purity: >90.0%(T)

Color and Shape: Dark green to Dark red to Black powder to crystaline

Molecular weight: 776.36

Ref: 3B-A5009

Arsenazo III Free Acid (High Purity) extrapure AR, 85%

CAS: 1668-00-4

Formula: C₂₂H₁₈As₂N₄O₁₄S₂

Purity: min. 85%

Color and Shape: Brown to very dark brown and black, Powder

Molecular weight: 776.37

Ref: SR-47014