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199684-20-3

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199684-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199684-20-3 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 0 respectively.
Calculate Digit Verification of CAS Registry Number 199684-20:
(8*1)+(7*9)+(6*9)+(5*6)+(4*8)+(3*4)+(2*2)+(1*0)=203
203 % 10 = 3
So 199684-20-3 is a valid CAS Registry Number.

199684-20-3Relevant articles and documents

Pyrrolo[2,3-d][1,2,3]triazoles as potential antineoplastic agents

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

, p. 1229 - 1235 (2007/10/03)

Halonitropyrrole (1a) underwent nucleophilic substitution by substituted benzylamines (7) to give the intermediates (8), which by reduction and diazotization followed by an intramolecular coupling reaction led to derivatives of the title ring system (10).

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