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122641-56-9

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122641-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 122641-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,6,4 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 122641-56:
(8*1)+(7*2)+(6*2)+(5*6)+(4*4)+(3*1)+(2*5)+(1*6)=99
99 % 10 = 9
So 122641-56-9 is a valid CAS Registry Number.

122641-56-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 3,4-bis(1,2-dimethylindol-3-yl)furan-2,5-dione

1.2 Other means of identification

Product number -
Other names 2,3-bis(1,2-dimethyl-3-indolyl)maleic anhydride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:122641-56-9 SDS

122641-56-9Downstream Products

122641-56-9Relevant articles and documents

Thermally Irreversible Photochromic Systems. Reversible Photocyclization of 1,2-Diselenenylethene and 1,2-Diindolylethene Derivatives

Nakayama, Yasuhide,Hayashi, Koichiro,Irie, Masahiro

, p. 2592 - 2596 (2007/10/02)

Diarylethene derivatives with selenophene or indole rings were synthesized in an attempt to obtain thermally stable photochromic compounds having the absorption bands at longer wavelengths and to confirm our previous theoretical prediction for molecular design of thermally irreversible photochromic compounds.The absorption maxima of the closed-ring forms of 2,3-bis(2,4,5-trimethyl-3-selenenyl)maleic anhydride (6) and 2,3-bis(1,2-dimethyl-3-indolyl)maleic anhydride (10) were observed at 565 and 620 nm, respectively.Although dicyano and maleic anhydride derivatives with selenophene rings showed thermally irreversible photochromic reactions with a relatively high quantum yield (0.3), the derivatives with indole rings underwent thermal ring-opening reactions in the dark.The closed-ring forms of the derivatives with selenophene rings kept the absorption intensity constant for more than 12 h at 80 deg C, while the absorption intensity of the closed-ring form of the maleic anhydride derivative with indole rings decreased to 50 percent of the initial intensity in 3 h at 80 deg C.The difference in thermal stability between the diarylethenes with selenophene and indole rings was interpreted by the difference in aromatic stabilization energy of the two rings, as predicted by our previous report, rather than a steric effect.

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