144293-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144293-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,2,9 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 144293-40:
(8*1)+(7*4)+(6*4)+(5*2)+(4*9)+(3*3)+(2*4)+(1*0)=123
123 % 10 = 3
So 144293-40-3 is a valid CAS Registry Number.
144293-40-3Relevant academic research and scientific papers
An improved synthesis of cyclopropanes from homoallenic alcohols
Pyo, Sungsoo,Skowron III, Joseph F.,Cha, Jin K.
, p. 4703 - 4706 (2007/10/02)
Treatment of the readily available β-allene tosylates with LDA or nBuLi provides an expeditious, although stereorandom, synthesis of functionalized cyclopropanes which can be easily prepared in high enantiomeric purity.
