117661-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117661-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,6 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117661-47:
(8*1)+(7*1)+(6*7)+(5*6)+(4*6)+(3*1)+(2*4)+(1*7)=129
129 % 10 = 9
So 117661-47-9 is a valid CAS Registry Number.
117661-47-9Relevant academic research and scientific papers
Synthesis and Stereochemistry of Polycyclic Cyclohexa-2,4-dienones
Barron, Christine A.,Khan, Nazir,Sutherland, James K.
, p. 1728 - 1730 (2007/10/02)
The spontaneous cyclisation of divinyl ketenes to cyclohexadienones and the interception of the intermediate ketenes with Ph3PCHCO2Me to form allenes which cyclise to methylenecyclohexadienes has been investigated.
