128541-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128541-31-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,4 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128541-31:
(8*1)+(7*2)+(6*8)+(5*5)+(4*4)+(3*1)+(2*3)+(1*1)=121
121 % 10 = 1
So 128541-31-1 is a valid CAS Registry Number.
128541-31-1Relevant academic research and scientific papers
Isomerisation of α,β-difluoro α,β-unsaturated ketones
Martinet, P.,Sauvetre, R.,Normant, J.F.
, p. 86 - 92 (2007/10/02)
We describe here the facile E - Z isomerisation of α,β-difluoro α,β-unsaturated ketones using Me3SiI/THF or HCl/Et2O reagents.The Z isomer is obtained with a very great purity under mild conditions.
