1156509-62-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1156509-62-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,6,5,0 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1156509-62:
(9*1)+(8*1)+(7*5)+(6*6)+(5*5)+(4*0)+(3*9)+(2*6)+(1*2)=154
154 % 10 = 4
So 1156509-62-4 is a valid CAS Registry Number.
1156509-62-4Relevant articles and documents
Tetra-urea calix[4]arenes 1,3-bridged at the narrow rim
Podoprygorina, Ganna,Bolte, Michael,Boehmer, Volker
, p. 1592 - 1598 (2009)
The synthesis of special tetra-urea calix[4]arene derivatives is described. Two propyl ether groups in 1,3-position and a 5-iodo-isophthalamide bridge connecting two aminopropylether residues in 2,4-position at the narrow rim keep the molecule fixed in th