39984-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39984-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,8 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 39984-23:
(7*3)+(6*9)+(5*9)+(4*8)+(3*4)+(2*2)+(1*3)=171
171 % 10 = 1
So 39984-23-1 is a valid CAS Registry Number.
39984-23-1Relevant articles and documents
Synthesis of 3-(N-arylcarbamoyl)chromones from 2-hydroxyarylaminoenones and isocyanates
Myannik,Semenova,Yarovenko,Krayushkin
, p. 104 - 109 (2019/04/25)
A new method for the synthesis of 2-unsubstituted and 2-substituted 3-(N-arylcarbamoyl)-chromones by the reaction of 3-dimethylamino-1-(2-hydroxyaryl)prop-2-en-1-ones with arylisocyanates has been proposed.