129661-23-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129661-23-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,6 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 129661-23:
(8*1)+(7*2)+(6*9)+(5*6)+(4*6)+(3*1)+(2*2)+(1*3)=140
140 % 10 = 0
So 129661-23-0 is a valid CAS Registry Number.
129661-23-0Relevant academic research and scientific papers
One-pot Construction of the Oxapropellane Skeleton
Fang, Chenglin,Suganuma, Kyoko,Suemune, Hiroshi,Sakai, Kiyoshi
, p. 1483 - 1484 (2007/10/02)
1,4-Addition of diorganocuprates to the α,β-unsaturated esters (1)-(5) gave the oxapropellane skeleton, compounds (6)-(10), in a one-pot reaction, which proceeded via 1,4-addition, aldol condensation, and substitution.
