128788-44-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128788-44-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,8 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128788-44:
(8*1)+(7*2)+(6*8)+(5*7)+(4*8)+(3*8)+(2*4)+(1*4)=173
173 % 10 = 3
So 128788-44-3 is a valid CAS Registry Number.
128788-44-3Relevant academic research and scientific papers
SULFONE MEDIATED RUPE AND RAPHAEL REARRANGEMENTS
Barre, V.,Massias, F.,Uguen, D.
, p. 7389 - 7392 (2007/10/02)
Base-catalysed addition of methanol to propargylic sulfones selectively gave β-ketosulfones whereas mercuric salts catalysed additions gave γ-ketosulfones.The latter process has been used to prepare one half of pyrenophorine.
