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199684-22-5

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199684-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199684-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,6,8 and 4 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 199684-22:
(8*1)+(7*9)+(6*9)+(5*6)+(4*8)+(3*4)+(2*2)+(1*2)=205
205 % 10 = 5
So 199684-22-5 is a valid CAS Registry Number.

199684-22-5Relevant articles and documents

Pyrrolo[2,3-b][1,4]benzothiazine. A new ring system from azidopyrroles

Diana, Patrizia,Passannanti, Alessandra,Barraja, Paola,Lauria, Antonino,Cirrincione, Girolamo

, p. 2103 - 2109 (2007/10/03)

Nucleophilic substitutions in pyrrole series by uncharged nucleophiles, represented a valuable and versatile method to synthesize different types of key intermediates such as compounds (6), that were used to prepare the corresponding azides (10) which by thermal decomposition afforded the title ring system (11).

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