1328884-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1328884-20-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,8,8,8 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1328884-20:
(9*1)+(8*3)+(7*2)+(6*8)+(5*8)+(4*8)+(3*4)+(2*2)+(1*0)=183
183 % 10 = 3
So 1328884-20-3 is a valid CAS Registry Number.
1328884-20-3Relevant articles and documents
Regioselective O-substitution of C-undecylresorcin[4]arene
Farina, Francesco,Talotta, Carmen,Gaeta, Carmine,Neri, Placido
, p. 4842 - 4845 (2011)
Selectively functionalized resorcinarenes were obtained by weak-base-promoted O-alkylation of C-undecylresorcin[4]arene 1. Tetrasubstituted derivatives with C4-1,3,5,7, C2v-1,2,5,6, C s-1,2,4,7, and Ci-1,2,4,6 p
