78668-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78668-20-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,6 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78668-20:
(7*7)+(6*8)+(5*6)+(4*6)+(3*8)+(2*2)+(1*0)=179
179 % 10 = 9
So 78668-20-9 is a valid CAS Registry Number.
78668-20-9Relevant articles and documents
DARSTELLUNG UND KOMPLEXBILDUNG VON POLYAZACYCLOALKAN-N-ESSIGSAEUREN
Stetter, H.,Frank, W.,Mertens, R.
, p. 767 - 772 (2007/10/02)
A series of polyazacycloalkane-N-acids, varying in ring size from 12-18 members and in alkylgroups substitution were synthesized and their complexing properties were investigated in dependence upon conformation of the donor atoms.