120780-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 120780-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,7,8 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 120780-55:
(8*1)+(7*2)+(6*0)+(5*7)+(4*8)+(3*0)+(2*5)+(1*5)=104
104 % 10 = 4
So 120780-55-4 is a valid CAS Registry Number.
120780-55-4Relevant academic research and scientific papers
Reaction of ketenealkylsilylacetals with ethyl propiolate
Quendo, A.,Rousseau, G.
, p. 6443 - 6446 (2007/10/02)
The reaction of ketenealkylsilylacetals with ethyl propiolate in the presence of different Lewis acids is reported to give Michael-type additions or a cycloaddition.
