Arsenazo Ⅲ - AR , CAS No.1668-00-4

CAS: 1668-00-4 Cat. No.: A116397 Formula: C₂₂H₁₈(As₂)N₄O₁₄S₂ Molecular Weight: 776.37 Beilstein Registry Number: 5717957 EC Number: 216-788-6

GRADE & PURITY AR

Synonyms

Arsenazo III free acid | EINECS 216-788-6 | starbld0016539 | A882299 | ANTINEOPLASTIC-91528 | BSPBio_000025 | LP00218 | AI3-52542 | Arsenazo III sodium salt | ARSENAZO III, FREE ACID | 3,6-bis[(2-arsonophenyl)diazenyl]-4,5-dihydroxynaphthalene-2,7-disulfo

Storage

Room temperature

Shipped In

Normal

Overview

Usually used in the determination of calcium in serum,has been used to evaluate calcium transport in permeabilized cells,has also been used for the spectrophotometric determination of uranium and thorium.

Specifications

Synonyms

Arsenazo III free acid | EINECS 216-788-6 | starbld0016539 | A882299 | ANTINEOPLASTIC-91528 | BSPBio_000025 | LP00218 | AI3-52542 | Arsenazo III sodium salt | ARSENAZO III, FREE ACID | 3,6-bis[(2-arsonophenyl)diazenyl]-4,5-dihydroxynaphthalene-2,7-disulfo

Specifications & Purity

AR

Biochemical and Physiological Mechanisms

Arsenazo III is a metallochromic dye.Arsenazo III is used in the determination of calcium in biological samples. It is used to evaluate calcium transport in permeabilized cells.It is also used for the detection of rare earth metals (polyvalent metal ions)

Storage

Room temperature

Shipped In

Normal

Grade

AR

Product Line

A116397-1g

Names and Identifiers

Pubchem Sid

504773323

Pubchem Sid Url

https://pubchem.ncbi.nlm.nih.gov/substance/504773323

Canonical Smiles

C1=CC=C(C(=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=CC=CC=C4[As](=O)(O)O)O)O)[As](=O)(O)O

IUPAC Name

3,6-bis[(2-arsonophenyl)diazenyl]-4,5-dihydroxynaphthalene-2,7-disulfonic acid

InChIKey

UQHVTNUJRKELCE-UHFFFAOYSA-N

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)

Isomeric SMILES

C1=CC=C(C(=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=CC=CC=C4[As](=O)(O)O)O)O)[As](=O)(O)O

WGK Germany

3

UN Number

3465

Packing Group

III

Molecular Weight

776.37

Beilstein

5717957

Reaxy-Rn

1899806

Reaxys-RN_link_address

https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1899806&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Benzenoids
    • Class Naphthalenes
      • Subclass Naphthalene sulfonic acids and derivatives
        • Level5 Naphthalene sulfonates
          • Level6 2-naphthalene sulfonates

• Kingdom: Organic compounds
• Superclass: Benzenoids
• Class: Naphthalenes
• Subclass: Naphthalene sulfonic acids and derivatives
• Intermediate Tree Nodes: Naphthalene sulfonates
• Direct Parent: 2-naphthalene sulfonates
• Alternative Parents: 2-naphthalene sulfonic acids and derivatives Naphthols and derivatives 1-sulfo,2-unsubstituted aromatic compounds 1-hydroxy-4-unsubstituted benzenoids Pentaorganoarsanes Benzene and substituted derivatives Sulfonyls Organosulfonic acids Azo compounds Sulfur-containing organoarsenic compounds Propargyl-type 1,3-dipolar organic compounds Oxygen-containing organoarsenic compounds Organic metalloid salts Organopnictogen compounds Organooxygen compounds Organic oxides Hydrocarbon derivatives
• Molecular Framework: Aromatic homopolycyclic compounds
• Substituents: 2-naphthalene sulfonate - 2-naphthalene sulfonic acid or derivatives - 1-naphthol - 1-sulfo,2-unsubstituted aromatic compound - Arylsulfonic acid or derivatives - 1-hydroxy-4-unsubstituted benzenoid - Pentaorganoarsane - Monocyclic benzene moiety - Sulfonyl - Organosulfonic acid - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Azo compound - Oxygen-containing organoarsenic compound - Sulfur-containing organoarsenic compound - Organic metalloid salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organic salt - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organoarsenic compound - Aromatic homopolycyclic compound
• Description: This compound belongs to the class of organic compounds known as 2-naphthalene sulfonates. These are organic aromatic compounds that contain a naphthalene moiety that carries a sulfonic acid group at the 2-position. Naphthalene is a bicyclic compound that is made up of two fused benzene ring.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Solubility: Soluble in water (partly), 1N NH4OH (1 mg/ml), and alcohol.
• Sensitivity: Moisture sensitive.
• x_melt_point_char: >320 °C
• Molecular Weight: 776.400 g/mol
• Hydrogen Bond Donor Count: 8
• Hydrogen Bond Acceptor Count: 18
• Rotatable Bond Count: 8
• Exact Mass: 775.869 Da
• Monoisotopic Mass: 775.869 Da
• Topological Polar Surface Area: 330.000 Ų
• Heavy Atom Count: 44
• Formal Charge: 0
• Complexity: 1300.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

Frequently Asked Questions

What does AR mean?

AR is a defined analytical purity tier suitable for general analytical and reagent applications. It specifies a minimum assay percentage, controlled limits on common impurities (water, heavy metals, residue on ignition), and lot-to-lot consistency. AR is one of several purity tiers — choose based on the sensitivity and regulatory requirements of your method.

How should this product be stored?

Store at room temperature.

How is this product shipped?

This product ships under standard ambient conditions. No temperature-controlled packaging is required.

What are the CAS number, molecular formula and molecular weight?

The CAS Number is 1668-00-4, the molecular formula is C22H18As2N4O14S2, and the molecular weight is 776.37 g/mol. InChIKey UQHVTNUJRKELCE-UHFFFAOYSA-N.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.