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91506-68-2

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91506-68-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91506-68-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,0 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91506-68:
(7*9)+(6*1)+(5*5)+(4*0)+(3*6)+(2*6)+(1*8)=132
132 % 10 = 2
So 91506-68-2 is a valid CAS Registry Number.

91506-68-2Relevant articles and documents

Copper promoted C-S and C-N cross-coupling Reactions:The synthesis of 2-(N-Aryolamino)benzothiazoles and 2-(N-Aryolamino)benzimidazoles

Shaik, Baji vali,Seelam, Mohan,Tamminana, Ramana,Kammela, Prasad Rao

, p. 3865 - 3874 (2019/06/20)

The synthesis of 2-(N-aryolamino)benzothiazoles and 2-(N-aryolamino)benzimidazoles has been accomplished in the presence of copper catalyst. These reactions involve C-S and C-N cross-coupling reaction. All electron donating and withdrawing substituent's readily underwent the reaction to give target products in good to excellent yield. In addition, the reaction also gave target product in high yield with bulk scale.

Synthesis of N-substituted-2-Aminobenzothiazoles by ligand-Free copper(I)-Catalyzed cross-Coupling reaction of 2-haloanilines with isothiocyanates www.eurjoc.org

Shen, Guodong,Lv, Xin,Bao, Weiliang

scheme or table, p. 5897 - 5901 (2010/03/01)

A novel and efficient formation of N-substituted-2-aminobenzothiazoles by a ligand-free copper(I)-catalyzed one-pot cascade process was developed. A variety of isothiocyanates coupled with 2-iodoanilines to give N-substituted-2-amino-benzothiazoles in mod

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