129801-04-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129801-04-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,0 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129801-04:
(8*1)+(7*2)+(6*9)+(5*8)+(4*0)+(3*1)+(2*0)+(1*4)=123
123 % 10 = 3
So 129801-04-3 is a valid CAS Registry Number.
129801-04-3Relevant academic research and scientific papers
A new diastereoselective 3+2 annulation approach to five-membered carbocycles
Ghera,Yechezkel,Hassner
, p. 3653 - 3656 (2007/10/02)
The newly prepared 1-bromo-2-methylene-3-phenylsulfonylpropane 2 reacts with α,β unsaturated esters in a Michael induced ring closure to provide cyclopentane derivatives with complete diastereoselectivity.
