290297-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 290297-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,0,2,9 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 290297-90:
(8*2)+(7*9)+(6*0)+(5*2)+(4*9)+(3*7)+(2*9)+(1*0)=164
164 % 10 = 4
So 290297-90-4 is a valid CAS Registry Number.
290297-90-4Relevant articles and documents
Synthesis of dipolar nitronyl nitroxides
Greve, Stefan,Naether, Christian,Friedrichsen, Willy
, p. 2269 - 2270 (2007/10/03)
(equation presented) The synthesis of a nitronyl nitroxide radical with a dipolar (mesomeric betaine) unit is reported.