21504-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21504-22-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,0 and 4 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21504-22:
(7*2)+(6*1)+(5*5)+(4*0)+(3*4)+(2*2)+(1*2)=63
63 % 10 = 3
So 21504-22-3 is a valid CAS Registry Number.
21504-22-3Relevant academic research and scientific papers
New synthetic routes to vinyl sulfides, ketene thioacetals and their seleno analogues from carbonyl compounds
Denis,Desauvage,Hevesi,Krief
, p. 4009 - 4012 (2007/10/02)
Title compounds have been prepared from carbonyl compounds by formal removal of hydroxyl and sulfenyl or hydroxyl and selenyl moieties from the corresponding functionalized β-hydroxysulfides or β-hydroxyselenides.
