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70919-57-2

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70919-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70919-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,1 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 70919-57:
(7*7)+(6*0)+(5*9)+(4*1)+(3*9)+(2*5)+(1*7)=142
142 % 10 = 2
So 70919-57-2 is a valid CAS Registry Number.

70919-57-2Relevant academic research and scientific papers

DEILS-ALDER ADDUCTS FROM N-SUBSTTITUED TAUTOMERIC 2(1H)-PYRIDONE-2-HYDROXYPYRIDINES; 5,6-BENZO-AZABARRELENONES AND 5,6-BENZO-AZABARRELENES

Kuzuya, Masayuki,Mano, Ei-ichi,Adachi, Michihiro,Noguchi, Akihiro,Okuda, Takachiyo

, p. 475 - 478 (2007/10/02)

Diels-Alder reactions of several N-unsubstitued tautomeric 2(1H)-pyridone-2-hydroxypyridines with benzyne were examined and found to afford 5,6-azabarrelenones, wich were converted to hitherto unknown 5,6-benzo-azabarrelenes.

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