2977-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2977-31-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,7 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2977-31:
(6*2)+(5*9)+(4*7)+(3*7)+(2*3)+(1*1)=113
113 % 10 = 3
So 2977-31-3 is a valid CAS Registry Number.
2977-31-3Relevant articles and documents
Ring opening reactions of 2-methyleneoxetanes
Wang, Ying,Bekolo, Henri,Howell, Amy R.
, p. 7101 - 7107 (2007/10/03)
Ring opening of 2-methyleneoxetanes with stabilized carbanion nucleophiles provides substituted ketones. The intermediate enolate can be trapped as its silylenol ether. If the 2-methyleneoxetane is exposed to more strongly basic carbanions, the correspond