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Toluene-4-sulfonate1-ethyl-2-{(E)-3-[1-ethyl-6-nitro-1H-benzo[cd]indol-(2Z)-ylidene]-propenyl}-6-nitro-benzo[cd]indolium; is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81903-75-5

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81903-75-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81903-75-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,0 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81903-75:
(7*8)+(6*1)+(5*9)+(4*0)+(3*3)+(2*7)+(1*5)=135
135 % 10 = 5
So 81903-75-5 is a valid CAS Registry Number.

81903-75-5Downstream Products

81903-75-5Relevant academic research and scientific papers

EFFECT OF POLAR SUBSTITUENTS AND THE LENGTH OF THE POLYMETHINE CHAIN ON THE COLOR OF CYANINE DYES OF THE BENZOINDOLE SERIES

Mikhailenko, F. A.,Vasilenko, N. P.,Kachkovskii, A. D.,Rozhinskii, Yu. I.

, p. 380 - 386 (2007/10/02)

For the case of symmetrical carbocyanine dyes it was shown that substituents at position 6 in the benzoindole ring cause the greatest deepening of the color.Experimental data on the action of substituents on the color are confirmed by quantum-chem,ical caclulations.The elongation of the polymethine chain of benzoindole dyes by one vinylene group deepens the color by 100 nm.

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