77661-70-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77661-70-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,6 and 1 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77661-70:
(7*7)+(6*7)+(5*6)+(4*6)+(3*1)+(2*7)+(1*0)=162
162 % 10 = 2
So 77661-70-2 is a valid CAS Registry Number.
77661-70-2Relevant academic research and scientific papers
Reactions of cyclic boric acids esters with paraformaldehyde
Brusilovskii, Yu. E.,Kuznetsov
experimental part, p. 542 - 544 (2011/06/22)
Reactions of five- and six-membered cyclic esters of boric acids with paraformaldehyde lead to the corresponding 1,3-dioxacycloalkanes. It is shown that trans-isomers of 2,4,5-substituted 1,3,2-dioxaborinanes react faster than their cis-isomers.
