4225-43-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4225-43-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,2 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4225-43:
(6*4)+(5*2)+(4*2)+(3*5)+(2*4)+(1*3)=68
68 % 10 = 8
So 4225-43-8 is a valid CAS Registry Number.
4225-43-8Relevant articles and documents
A CONVENIENT SYNTHESIS OF SUBSTITUTED γ-PYRONES
Koreeda, Masato,Akagi, Hiroshi
, p. 1197 - 1200 (2007/10/02)
An efficient and general synthetic method for various 2-mono- and 2,6-disubstituted γ-pyrones has been developed.This utilizes the C-acylation (70-85percent) of β-methoxy-α,β-enone lithium enolates 4 by acid chlorides 3 followed by the acid-catalyzed cycl
