2554-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2554-84-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,5 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2554-84:
(6*2)+(5*5)+(4*5)+(3*4)+(2*8)+(1*4)=89
89 % 10 = 9
So 2554-84-9 is a valid CAS Registry Number.
2554-84-9Relevant articles and documents
Cyclodehydrogenation of 2'-Hydroxychalcones with DDQ: A Simple Route for Flavones and Aurones
Imafuku, Kimiaki,Honda, Masaaki,McOmie, J. F. W.
, p. 199 - 201 (2007/10/02)
The oxidation of 2'-hydroxychalcones with 2,3-dichloro-5,6-dicyano-p-benzoquinone provides a useful synthetic route for flavones and aurones.