22649-23-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22649-23-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,4 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 22649-23:
(7*2)+(6*2)+(5*6)+(4*4)+(3*9)+(2*2)+(1*3)=106
106 % 10 = 6
So 22649-23-6 is a valid CAS Registry Number.
22649-23-6Relevant articles and documents
Copper(II) halides adsorbed on alumina as halogenating reagent for coumarins
Thapliyal,Singh,Khanna
, p. 2821 - 2826 (2007/10/02)
Coumarin and its derivatives have been halogenated selectively at C-3 position with copper(II) halides adsorbed on neutral alumina and halobenzene.
