Pyrogallol red

CAS Registry Number®

32638-88-3

CAS Name

Pyrogallol red

Molecular Formula

C19H12O8S

Molecular Mass

400.36

Cite this Page

Pyrogallol red.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=3172-49-4 (retrieved 2024-11-25) (CAS RN: 32638-88-3).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    >315 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C19H12O8S/c20-12-7-5-10-17(15(12)22)26-18-11(6-8-13(21)16(18)23)19(10)9-3-1-2-4-14(9)28(24,25)27-19/h1-8,20-23H

InChIKey

InChIKey=KUQNCHZOCSYKOR-UHFFFAOYSA-N

SMILES

O=S1(=O)OC2(C=3C1=CC=CC3)C=4C(OC=5C2=CC=C(O)C5O)=C(O)C(O)=CC4

Canonical SMILES

O=S1(=O)OC2(C3=CC=C(O)C(O)=C3OC4=C(O)C(O)=CC=C42)C=5C=CC=CC51

Other Names for this Substance

  • Spiro[3H-2,1-benzoxathiole-3,9′-[9H]xanthene]-3′,4′,5′,6′-tetrol, 1,1-dioxide
  • Pyrogallolsulfonephthalein
  • Pyrogallol red
  • Red pyrogallol
  • 3′,4′,5′,6′-Tetrahydroxyspiro[benzo[c][1,2]oxathiole-3,9′-xanthene] 1,1-dioxide

Deleted or Replaced CAS Registry Numbers

3172-49-4, 116239-00-0, 205682-71-9, 801145-40-4, 810024-92-1, 856926-05-1

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