146273-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 146273-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,6,2,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 146273-21:
(8*1)+(7*4)+(6*6)+(5*2)+(4*7)+(3*3)+(2*2)+(1*1)=124
124 % 10 = 4
So 146273-21-4 is a valid CAS Registry Number.
146273-21-4Relevant articles and documents
Synthesis and Biological Activity of some 2-Aryl-4H-1-benzopyran-4-ones
Coutinho, Dionysia L. M.,Fernandes, Peter S.
, p. 265 - 267 (2007/10/02)
A new three-step synthesis of 2-(4-aminophenyl)-4H-1-benzopyran-4-one (4) is reported. 2--4H-1-benzopyran-4-one (6a-c) and 2--4H-1-benzopyran-4-one (7a-c) have been synthesised f