# 橙红 (CAS 21934-68-9)

CAS: 21934-68-9
PubChem CID: 89556
InChIKey: XUFBVJQHCCCPNM-UHFFFAOYSA-N
Molecular formula: C26H25NO3
Molar mass: 399.5 g/mol
IUPAC: 6'-(diethylamino)-1',3'-dimethylspiro[2-benzofuran-3,9'-xanthene]-1-one
SMILES: CCN(CC)C1=CC2=C(C=C1)C3(C4=CC=CC=C4C(=O)O3)C5=C(C=C(C=C5O2)C)C
InChI: InChI=1S/C26H25NO3/c1-5-27(6-2)18-11-12-21-22(15-18)29-23-14-16(3)13-17(4)24(23)26(21)20-10-8-7-9-19(20)25(28)30-26/h7-15H,5-6H2,1-4H3
logP (XLogP3): 5.7
PSA: 38.8 A^2
Hydrogen bond donors: 0
Hydrogen bond acceptors: 4
Rotatable bonds: 3
Heavy atoms: 30
3D structure: 55 atoms, 59 bonds

## About the compound

橙红 (CAS 21934-68-9) is a chemical compound registered under CAS number 21934-68-9. Molecular formula: C26H25NO3. Molar mass: 399.5 g/mol. The full systematic IUPAC name is: 6'-(diethylamino)-1',3'-dimethylspiro[2-benzofuran-3,9'-xanthene]-1-one. The molecule contains 55 atoms connected by 59 chemical bonds. 
Chemical data comes from the PubChem (NIH), ChEMBL (EBI) and NIST WebBook databases. GHS statement translations comply with the CLP Regulation (EC 1272/2008). Interactive 3D model and 2D skeleton available at: https://molgod.org/molekula/21934-68-9/


## Synonyms

  - EINECS 244-667-8
  - Fluoran, 3'-(diethylamino)-6',8'-dimethyl-
  - Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 6'-(diethylamino)-1',3'-dimethyl-
  - 6'-(Diethylamino)-1',3'-dimethylspiro(isobenzofuran-1(3H),9'-(9H)xanthene)-3-one
  - Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6'-(diethylamino)-1',3'-dimethyl-
  - 6'-(diethylamino)-1',3'-dimethylspiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one
  - RefChem:888782
  - DTXCID601024578
  - 244-667-8
  - 21934-68-9
  - 6'-(Diethylamino)-1',3'-dimethylfluoran
  - 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one

## Available in the shop

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Product: 橙红 (CAS 21934-68-9) — Shenyang Photosensitive Research Institute
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## Data sources

  - PubChem CID 89556: https://pubchem.ncbi.nlm.nih.gov/compound/89556
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=21934-68-9
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=21934-68-9

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Last updated: 2026-09-02
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