66633-26-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66633-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,3 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66633-26:
(7*6)+(6*6)+(5*6)+(4*3)+(3*3)+(2*2)+(1*6)=139
139 % 10 = 9
So 66633-26-9 is a valid CAS Registry Number.
66633-26-9Relevant academic research and scientific papers
Synthesis of Cyclooctenynes
Petersen, Hermann,Meier, Herbert
, p. 2383 - 2397 (2007/10/02)
The three isomeric cis-cyclooctenynes 2-4 are prepared.The ring strain is enhanced in comparison to cyclooctyne (1) and increases from 1 to 4.The resulting consequences on life time and reactivity of the compounds are discussed.
