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261711-74-4

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261711-74-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 261711-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,7,1 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 261711-74:
(8*2)+(7*6)+(6*1)+(5*7)+(4*1)+(3*1)+(2*7)+(1*4)=124
124 % 10 = 4
So 261711-74-4 is a valid CAS Registry Number.

261711-74-4Relevant articles and documents

Thiocyanation of alkylanilines. A simple and efficient synthesis of thiosulfonates containing 2-aminobenzothiazole

Vara Prasad,Panapoulous,Rubin, John R.

, p. 4065 - 4068 (2000)

Thiocyanation of anilines was used to introduce a thiol functionality and to construct the aminothiazole ring, all in a single step. A systematic study of thiocyanation of alkyl anilines was investigated to understand the regio-chemistry of the reaction. X-Ray crystal structures of two 2- aminobenzothiazoles were determined to assign the structures without any ambiguity. The intermediates obtained were further expanded to thiosulfonates containing 2-aminobenzothiazoles, which are extremely valuable intermediates to synthesize HIV protease inhibitors. (C) 2000 Elsevier Science Ltd.

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