3,3-Bis(2-methyl-1-octyl-1H-indol-3-yl)isobenzofuran-1(3H)-one TCI B6479

Chemical Identity

Other names: 3,3-Bis(2-methyl-1-octyl-1H-indol-3-yl)-2-benzofuran-1(3H)-one · 3,3-Bis(2-methyl-1-octyl-3-indolyl)phthalide · Pergascript Red 16
CAS No.: 50292-95-0
PubChem: CID 162584
Formula: C42H52N2O2
Molecular weight: 616.89 g/mol
Purity: >95.0%(HPLC)(T)
Reference databases: ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 3,3-bis(2-methyl-1-octylindol-3-yl)-2-benzofuran-1-one
SMILES: CCCCCCCCN1C(=C(C2=CC=CC=C21)C3(C4=CC=CC=C4C(=O)O3)C5=C(N(C6=CC=CC=C65)CCCCCCCC)C)C
InChIKey: XOEUNIAGBKGZLU-UHFFFAOYSA-N
MDL: MDL09838640

Rp 1.644.300,00

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Berat 25g

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This bis(indolyl)phthalide compound is a lactone-type leuco dye that remains colourless in its closed-ring form. Contact with an acidic developer opens the lactone ring, extending the conjugated system and producing a distinct colour change that is often reversible. The N-octyl chains improve solubility in organic media and compatibility with wax and polymer matrices used in thermal recording layers. TCI supplies the dye in a 25 g pack size for research into heat-sensitive and pressure-sensitive materials.