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Substance Name: Arsenazo III
RN: 1668-00-4
InChIKey: UQHVTNUJRKELCE-NBHCHVEOSA-N

Note

  • Metallochrome indicator that changes color when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo.

Classification Codes

  • Coloring Agents
  • Indicators and Reagents

Molecular Formula

  • C22-H18-As2-N4-O14-S2

Molecular Weight

  • 776.374
 
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Names and Synonyms

Name of Substance

  • Arsenazo III

MeSH Heading

  • Arsenazo III

Synonyms

  • AI3-52542
  • EINECS 216-788-6
  • NSC 91528

Systematic Names

  • 2,7-(Bis(2-arsonophenylazo))-1,8-dihydroxynaphthalene-3,6-disulphonic acid
  • 2,7-Naphthalenedisulfonic acid, 3,6-bis((2-arsonophenyl)azo)-4,5-dihydroxy-

Registry Numbers

CAS Registry Number

  • 1668-00-4

System Generated Number

  • 0001668004

Structure Descriptors

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)/b27-25+,28-26+

InChIKey

UQHVTNUJRKELCE-NBHCHVEOSA-N

Smiles

c12c(cc(S(O)(=O)=O)c(c1O)\N=N\c1c(cccc1)[As](O)(O)=O)cc(S(O)(=O)=O)c(c2O)\N=N\c1c(cccc1)[As](O)(O)=O