443305-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 443305-22-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,3,3,0 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 443305-22:
(8*4)+(7*4)+(6*3)+(5*3)+(4*0)+(3*5)+(2*2)+(1*2)=114
114 % 10 = 4
So 443305-22-4 is a valid CAS Registry Number.
443305-22-4Relevant academic research and scientific papers
A rapid access to coumarin derivatives (using Vilsmeier-Haack and Suzuki cross-coupling reactions)
Hesse, Stéphanie,Kirsch, Gilbert
, p. 1213 - 1215 (2007/10/03)
A four-step preparation of compounds containing a coumarinic moiety is presented. This synthesis involves notably a Suzuki cross-coupling reaction (performed in aqueous media) and a ring closure by formation of δ-lactone.
