21128-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21128-52-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,2 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21128-52:
(7*2)+(6*1)+(5*1)+(4*2)+(3*8)+(2*5)+(1*2)=69
69 % 10 = 9
So 21128-52-9 is a valid CAS Registry Number.
21128-52-9Relevant academic research and scientific papers
Charoonniyomporn, Porntip,Thongpanchang, Tienthong,Witayakran, Suteera,Thebtaranonth, Yodhathai,Phillips, Karen E. S.,Katz, Thomas J.
, p. 457 - 459 (2004)
Bisalkylthioarenes can be prepared efficiently from reactions between dihydroxyarenes and thiols under acidic conditions.