117568-01-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117568-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,5,6 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117568-01:
(8*1)+(7*1)+(6*7)+(5*5)+(4*6)+(3*8)+(2*0)+(1*1)=131
131 % 10 = 1
So 117568-01-1 is a valid CAS Registry Number.
117568-01-1Relevant articles and documents
Macroheterocycles with an Endocyclic Azo-Group. 1. Tetraazamacrocycles Obtained from Resorcinol
Sultanov, A. V.,Savvin, S. B.
, p. 106 - 109 (1988)
High-dilution azocoupling of bisdiazotized bis-(2-aminophenyl)oligooxa (or thia)alkanes with resorcinol gives tetraazamacrocycles with two endocyclic azogroups.It is shown that azocoupling occurs exclusively at the 2- and 4-positions of the resorcinol ring.