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74121-32-7

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74121-32-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74121-32-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,2 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74121-32:
(7*7)+(6*4)+(5*1)+(4*2)+(3*1)+(2*3)+(1*2)=97
97 % 10 = 7
So 74121-32-7 is a valid CAS Registry Number.

74121-32-7Relevant articles and documents

ELECTROACTIVE MATERIALS

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Page/Page column 101, (2016/05/19)

There is disclosed a compound having Formula (I), Formula (II), Formula (III), Formula (VIII), Formula (IX), or Formula (X) The variables are described in detail in the application.

SYNTHESIS AND TRANSFORMATIONS OF 2,7-DISUBSTITUTED BENZOTHIENOBENZOTHIOPHENES

Zherdeva, S. Yu.,Barudi, A.,Zheltov, A. Ya.,Stepanov, B. I.

, p. 383 - 390 (2007/10/02)

A new method was developed for the synthesis of 2,7-disubstituted benzothienobenzothiophenes by the reaction of 4,4'-disubstituted 2,2'-stilbenedisulfonyl chloride with hydriodic acid and subsequent treatment of the reaction products with perbromopyridinium bromide.From 2,7-dinitrobenzothienobenzothiophene a series of new derivatives containing various electron-donating and electron-withdrawing substituents were obtained.

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