474335-62-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 474335-62-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,4,3,3 and 5 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 474335-62:
(8*4)+(7*7)+(6*4)+(5*3)+(4*3)+(3*5)+(2*6)+(1*2)=161
161 % 10 = 1
So 474335-62-1 is a valid CAS Registry Number.
474335-62-1Relevant articles and documents
Synthesis of 5,6-indolo-12-crown-4 ethers
Klyatskaya, S. V.,Tretyakov, E. V.,Vasilevsky, S. F.
, p. 135 - 138 (2007/10/03)
o-Alkyl derivatives of N-acetylaminobenzo-12-crowns-4 4a-f were prepared by Pd-Cu-catalyzed alkynylation of 5'-N-acetylamino-4' -iodobenzo-12-crown-4 (2). Cyclization of compounds 4a-f afforded the corresponding substituted 5,6-indolo-12-crowns-4 5a-c.
