693833-12-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 693833-12-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,3,8,3 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 693833-12:
(8*6)+(7*9)+(6*3)+(5*8)+(4*3)+(3*3)+(2*1)+(1*2)=194
194 % 10 = 4
So 693833-12-4 is a valid CAS Registry Number.
693833-12-4Relevant articles and documents
A direct meta-lithiation route to 1,3-disubstituted ferrocenes
Pichon, Christophe,Odell, Barbara,Brown, John M.
, p. 598 - 599 (2007/10/03)
Ferrocenyl sulfides afford meta-lithiation products with up to 94% regioselectivity on reaction with s-BuLi; the resulting 1,3-disubstituted ferrocenes can then be reacted with a variety of electrophiles.
