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259657-69-7

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259657-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 259657-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,6,5 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 259657-69:
(8*2)+(7*5)+(6*9)+(5*6)+(4*5)+(3*7)+(2*6)+(1*9)=197
197 % 10 = 7
So 259657-69-7 is a valid CAS Registry Number.

259657-69-7Downstream Products

259657-69-7Relevant articles and documents

Quinoxalines, benzodiazepines and benzodiazocines fused to pyrrole and isoindole via N-acyliminium ion aromatic cyclization

Othman, Mohamed,Pigeon, Pascal,Netchita?lo, Pierre,Da?ch, Adam,Decroix, Bernard

, p. 273 - 281 (2007/10/03)

Quinoxaline (6a), [1,4]benzodiazepines (6b,c) and [2,5]-benzodiazocine (6d) were synthesized from hydroxylactams (3a-d) or (4a-d) via an N- acyliminium ion-pyrrole cyclization reaction. 3 and 4 were prepared in two steps from ready available substituted anilines (1a,b) or benzylamines (1c,d).

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