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198572-76-8

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198572-76-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198572-76-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,5,7 and 2 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 198572-76:
(8*1)+(7*9)+(6*8)+(5*5)+(4*7)+(3*2)+(2*7)+(1*6)=198
198 % 10 = 8
So 198572-76-8 is a valid CAS Registry Number.

198572-76-8Relevant articles and documents

Heterocycles with a benzothiadiazepine moiety. 5. Derivatives of pyrrolo[2,1-d][1,2,5]benzothiadiazepine, a novel tricyclic ring

Di Santo,Costi,Artico,Massa

, p. 375 - 378 (2007/10/03)

The synthesis of pyrrolo[2,1-d][1,2,5]benzothiadiazepin-7(6H)-one 5,5- dioxide has been achieved by reaction between 2-(1H-pyrrol-1- yl)benzenesulfonamide and triphosgene. N-Ethylation of the tricyclic derivative afforded 6-ethylpyrrolo[2,1-d][1,2,5]benzothiadiazepin-7(6H)-one 5,5-dioxide, also obtained by the action of trifosgene on N-ethyl 2-(1H- pyrrol-1-yl)benzenesulfonamide. Preparation of pyrrole derivatives from 2- aminobenzenesulfonamide and its N-ethyl derivative by Clauson-Kaas procedure required preliminary protection of the sulfonamide function.

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