70310-99-5

Basic information

• Product Name: 6-(4-nitrostyryl)-1',3',3'-trimethylspiro<2H-1-benzopyran-2,2'-<1H>-indole>
• CAS NO: 70310-99-5
• Molecular Weight: 424.499
• Mol File: 70310-99-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 6-(4-nitrostyryl)-1',3',3'-trimethylspiro<2H-1-benzopyran-2,2'-<1H>-indole>(CAS DataBase Reference)
• NIST Chemistry Reference: 6-(4-nitrostyryl)-1',3',3'-trimethylspiro<2H-1-benzopyran-2,2'-<1H>-indole>(70310-99-5)
• EPA Substance Registry System: 6-(4-nitrostyryl)-1',3',3'-trimethylspiro<2H-1-benzopyran-2,2'-<1H>-indole>(70310-99-5)

Safety Data

• Hazardous Substances Data: 70310-99-5(Hazardous Substances Data)

Upstream product

• 118-12-7 1,3,3-Trimethyl-2-methyleneindoline 
• 70310-95-1 2-hydroxy-5-[(E)-4-nitrophenyldiazenyl]benzaldehyde 
• 555-16-8 4-nitrobenzaldehdye 
• 70311-00-1 triphenyl-(1',3',3'-trimethyl-1',3'-dihydro-spiro[chromene-2,2'-indol]-6-ylmethyl)-phosphonium; chloride 
• 100-11-8 1-bromomethyl-4-nitro-benzene 
• 68860-35-5 (3‐formyl‐4‐hydroxybenzyl)triphenylphosphonium chloride 
• 23731-06-8 5-(chloromethyl)salicylaldehyde 
• 3328-70-9 5-formyl-2-hydroxybenzaldehyde 
• 2767-70-6 (p-nitrobenzyl)triphenylphosphonium bromide 
• 20200-69-5 6-formyl-1',3',3'-trimethylspiro<2H-1-benzopyran-2,2'-<1H>-indole> 

Relevant articles and documents

Synthesis of photochromic spiroindolinopyrans with extended conjugation

Unsaturated side chains have been introduced in benzopyran site of parent indolinospiropyran moiety using Wittig reaction under conditions of Phase Transfer Catalysis in a one pot synthesis. The resultant unsaturated photochromic indolinospirobenzopyrans show significant bathochromic shift in the uv region of absorption spectra.