218769-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218769-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,7,6 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 218769-66:
(8*2)+(7*1)+(6*8)+(5*7)+(4*6)+(3*9)+(2*6)+(1*6)=175
175 % 10 = 5
So 218769-66-5 is a valid CAS Registry Number.
218769-66-5Relevant articles and documents
First Example of Alkynyliodonium Tosylates coupling with 1,1-Bimetalloalkenes of Selenium and Zirconium
Sun, Ai-Ming,Huang, Xian
, p. 616 - 617 (1998)
Hydrozirconation of internal acetylenic selenides afforded 1,1-bimetalloalkenes, (E)-α-selanylvinylzirconium, which can cross-couple with alkynyliodonium tosylates directly in the presence of Pd(PPh3)4 as the catalyst.