219918-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219918-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,1 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 219918-20:
(8*2)+(7*1)+(6*9)+(5*9)+(4*1)+(3*8)+(2*2)+(1*0)=154
154 % 10 = 4
So 219918-20-4 is a valid CAS Registry Number.
219918-20-4Relevant academic research and scientific papers
Hemi-thioacetal pummerer reaction for the synthesis of gliovirin benzylic sulfide models
Magnus, Philip,Mitchell, Ian S.
, p. 9131 - 9134 (2007/10/03)
The cyclic hemithioacetal sulfoxide 15 readily undergoes the Pummerer reaction in the presence of carbon nucleophiles to give substitute benzylic sulfides in excellent yields.
