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23746-59-0

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23746-59-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23746-59-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,4 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23746-59:
(7*2)+(6*3)+(5*7)+(4*4)+(3*6)+(2*5)+(1*9)=120
120 % 10 = 0
So 23746-59-0 is a valid CAS Registry Number.

23746-59-0Relevant articles and documents

METHOD FOR PRODUCING POLYGUANIDINES

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Paragraph 0092; 0093; 0094, (2017/12/27)

A method for preparing polycondensation products of guanidine, aminoguanidine or diaminoguanidine G with one or more benzyl or allyl derivatives BA according to the following reaction scheme is provided: wherein X, R1, Gua, Y and Z are as defined in the specification. In the disclosed method, at least one benzyl or allyl derivative BA is subjected to a polycondensation reaction with excessive guanidine, aminoguanidine or diaminoguanidine G upon elimination of HX.

Synthesis of unsymmetrical divinylbenzenes by palladium catalyzed sequential heck reactions starting from carboxybenzenediazonium salts

Wang, Chao,Tan, Lu-Shi,He, Jin-Ping,Hu, Hong-Wen,Xu, Jian-Hua

, p. 773 - 782 (2007/10/03)

Six p-, m- and o-unsymmetrical divinylbenzenes 5a, 5b, 6a, 6b, 6c and 7a are synthesized from p-, m- and o- carboxybenzenediazonium tetrafluoroborates via sequential Heck reactions in good overall yield.

Palladium-catalyzed reactions of bisarenediazoniutn salts: Two-fold Heck reaction, carbonylation and cross-coupling regimen

Sengupta, Saumitra,Sadhukhan, Subir Kumar,Bhattacharyya, Sanchita,Guha, Joydeep

, p. 407 - 410 (2007/10/03)

Two-fold Heck reaction, carbonylation and cross-coupling reactions of bisarenediazonium salts have been carried out in high yields under mild, aqueous alcoholic conditions to provide a new synthetic repertoire for tetraaryls and other aromatic derivatives having extended conjugation.

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