81820-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81820-41-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,2 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81820-41:
(7*8)+(6*1)+(5*8)+(4*2)+(3*0)+(2*4)+(1*1)=119
119 % 10 = 9
So 81820-41-9 is a valid CAS Registry Number.
81820-41-9Relevant articles and documents
2-Phenyl-4-arylidene-2-imidazolin-5-ones and Their Derivatives
Badr, M. Z.,El-Sherief, H. A. H.,Tadros, M. E.
, p. 1093 - 1094 (2007/10/02)
A new series of esters and amides (III - VIII) of 1-(p-carboxyphenyl)-2-phenyl-4-arylidene-2-imidazolin-5-ones (IIa - c) have been obtained.Condensation of 2-phenyl-4-arylidene-2-oxazolin-5-ones (I) with sulphonamides gives the corresponding 1-(p-sulphona
