Red 21

CAS Registry Number®

15086-94-9

CAS Name

Red 21

Molecular Formula

C20H8Br4O5

Molecular Mass

647.89

Cite this Page

Red 21.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=15086-94-9 (retrieved 2024-11-23) (CAS RN: 15086-94-9).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C20H8Br4O5/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20/h1-6,25-26H

InChIKey

InChIKey=DBZJJPROPLPMSN-UHFFFAOYSA-N

SMILES

O=C1OC2(C=3C(OC=4C2=CC(Br)=C(O)C4Br)=C(Br)C(O)=C(Br)C3)C=5C1=CC=CC5

Canonical SMILES

O=C1OC2(C=3C=CC=CC13)C4=CC(Br)=C(O)C(Br)=C4OC5=C(Br)C(O)=C(Br)C=C52

Other Names for this Substance

  • Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 2′,4′,5′,7′-tetrabromo-3′,6′-dihydroxy-
  • Fluorescein, 2′,4′,5′,7′-tetrabromo-
  • 2′,4′,5′,7′-Tetrabromo-3′,6′-dihydroxyspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one
  • D and C Red No. 21
  • 3,6-Dihydroxy-2,4,5,7-tetrabromospiro[xanthene-9,3′-phthalide]

View All

Deleted or Replaced CAS Registry Numbers

477-63-4, 19052-67-6, 30495-79-5, 113601-31-3, 342043-92-9, 722454-16-2, 732983-53-8, 859629-60-0, 1043892-09-6, 2761054-31-1, 2847776-98-9, 2914139-44-7

CAS INSIGHTSTM
Hourglass and a clock