1',3',3'-Trimethyl-1',3'-Dihydrospiro[Benzo[f]Chromene-3,2'-Indole]
[CAS# 1592-43-4]

Identification

• Name: 1',3',3'-Trimethyl-1',3'-Dihydrospiro[Benzo[f]Chromene-3,2'-Indole]
• Synonyms: 1,3,3-Trimethylindoline-2-spiro-2'-(5',6'-benzo)-α-chromen; 1,3,3-TRIMETHYLINDOLINO-β-NAPHTHOPYRYLOSPIRAN; 1,3,3-Trimethylindolino-β-naphthopyrylospiran [Photochromic Compound]
• Molecular Formula: C₂₃H₂₁NO
• Molecular Weight: 327.42
• CAS Registry Number: 1592-43-4
• SMILES: O1c5c(\C=C/C13N(c2c(cccc2)C3(C)C)C)c4ccccc4cc5
• InChI: 1S/C23H21NO/c1-22(2)19-10-6-7-11-20(19)24(3)23(22)15-14-18-17-9-5-4-8-16(17)12-13-21(18)25-23/h4-15H,1-3H3
• InChIKey: DTQKEQFXLWFVCS-UHFFFAOYSA-N

Properties

• Density: 1.229g/cm³ (Cal.)
• Melting point: 174°C (Expl.)
• Boiling point: 492.731°C at 760 mmHg (Cal.)
• Flash point: 142.772°C (Cal.)
• Refractive index: 1.7 (Cal.)

References

• (1): Jun Harada, Yuta Kawazoe and Keiichiro Ogawa. Photochromism of spiropyrans and spirooxazines in the solid state: low temperature enhances photocoloration, Chem. Commun., 2010, 46, 2593.